MEGATRONIX MEGALARM MEGA 250 User manual

MEGA 250 INSTALL
1
MEGA 250
4-CHANNEL REMOTE ENGINE STARTER
AND KEYLESS ENTRY SYSTEM
Installation Manual
MEGATRONIX
CALIFORNIA, U.S.A.

MEGA 250 INSTALL
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INTRODUCTION
INSTALLER WARNINGS
This Remote Starter with Alarm System is designed to be installed on fuel injected vehicles with an
automatic transmission ONLY.
Never install this remote starter on a manual transmission vehicle.
This system must be installed and wired through a safety switch it will not start in any forward or
reverse gear.
Some automatic transmission vehicle [mainly older GM vehicles with a purple starter wire] have a
mechanical-type park safety switch instead of electrical safety switch. The mechanical type does not
interrupt the starter circuit when the transmission is any gear and does not offer the 100% level of
safety required for remote starting purposes. Therefore, our system should never be installed on any
vehicle that uses a mechanical type park safety switch.
Once you install this system, you must verify that the vehicle will not start any forward or reverse
gear. Regardless of the type of vehicle.
Read operation manual for operating and programming routine.
Do not install any component near the brake, gas pedal or steering linkage.
Some vehicles have a factory installed transponder immobilizer system that can severely
complicate the installation. There is possibility that this system can not be installed on some
immobilizer equipped vehicles.
Most vehicles have an SRS air bag system. Use extreme care and do not probe any wires of the
SRS system.
Disconnect the car battery before connecting work on the vehicle.
Check behind panels before drilling any holes. Ensure that no wiring harness or other
components are located behind the panels that would otherwise be damaged.
Use conventional crimp lock, bullet on any wiring. Poor wiring, i.e. taped joints will possibly
introduce unreliability into the alarm system and may result in false alarms or incorrect operation.
Install wiring neatly under carpets or behind trim to prevent possible damage to wires.
For the wire operates the current more than 10A. We suggest soldering all connection point. Do
not use crimp lock type connectors or wire nuts.

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INSTALLATION DIAGRAM
H 8
3 Pin
White
H 1
6 Pin
White
H 2
5 Pin
White
H 3
2 Pin
White
H 4
3 Pin
Black
H 5
5 Pin
White
VALET
SWITCH
H 6
5 Pin
Black
H 7
2 Pin
Blue
5. Pink: Ignition 2 output
2. Red: +12V Input
3. Red: +12V Input
4. Yellow: Ignition 1 output
1. Violet: Starter Output
20A
Fuse
20A
Fuse
6. Brown: ACC/Heater Output
LED
Indicator
1. Red/White: Parking Light Relay Power input
2. White: Parking Light Relay Output
3. Black: Ground to Vehicle Frame
4. Brown: (-) 200ma programmable Output
1. Horn Output (Factory Default Setting)
2. Channel 4 Output
3. Factory Security Rearm Signal Output
5. Red: +12V Input
15A
Fuse
H5
5 Pin White
Connector
for Output
Connection
H6
5 Pin Black
Connector
for Input
Connection
3. Green: (-) Lock Pulse. Or (+)Unlock Pulse.
1. Blue: (-) Unlock Pulse. Or (+)Lock Pulse.
Windshield
Receiver
Antenna

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#H5 5 PIN WHITE CONNECTOR FOR OUTPUT CONNECTION
3. White Wire: (-) 200 mA Programmable output
Dome Light Control Output (Factory Default setting)
Or Channel 4 Output
Or Ground Output During Start (Crank)
1. Orange Wire: (-) 500mA Grounded Output When Armed
5. Gray Wire: (-) 200 mA Channel 3 (Trunk) output
2. Yellow Wire: (-) 200 mA Ignition 3 Control Output
4. Pink Wire: (-) 200 mA Programmable output
2-Step Door Unlock Output (Factory Default setting)
Or Factory Security Disarm Signal Output
Or Start Status (Shock Sensor Bypass Control) Output
#H6. 5 PIN BLACK CONNECTOR FOR INPUT CONNECTION:
1. Green Wire: (-) Instant Start & Turn Off Input
3. White/Violet Wire: (+) Positive Safety Shut Down Input for Brake switch.
2. Black/White Wire: (-) Neutral Safety Switch Input &
(-) Remote Start Toggle Switch Input
5. White/Red Wire: Tach Signal Input
4. White/Black Wire: (-) Negative Safety Shut Down Input for Hood pin switch
IMPORTANT NOTE: Directly connect the H6/2 BLACK/WHITE wire to the “GROUND” when this wire
is not used.
WIRING
Keep wiring away from moving engine parts, exhaust pipes and high-tension cable. Tape wires that
pass through holes on the firewall to prevent fraying. Watches out sharp edges that may damage
wires and causes short circuit.
CAUTION: Do not connect the wire harness to control module until all wiring to vehicle is complete.
H1: 6 PIN HEAVY GAUGE WIRING CONNECTION:
Remember that the system does to start a vehicle is duplicate the functions of the ignition key
switch! Below, we will explain the three basic functions of the ignition switch. Since this installation
will require analysis of the ignition switch functions, we recommend making the three connections
below at the ignition switch harness directly.
H1/1. Violet Wire—Starter Output
Careful consideration for the connection of this wire must be made to prevent the vehicle from
starting while in gear. Understanding the difference between a mechanical and an electrical Neutral
Start Switch will allow you to properly identify the circuit and select the correct installation method.
In addition you will realize why the connection of the safety wire is required for all mechanical
switch configurations.
Failure to make this connection properly can result in personal injury and property damage.
In all installations it is the responsibility of the installing technician to test the remote start unit and
assure that the vehicle can not start via RF control in any gear selection other than park or neutral.
In both mechanical and electrical neutral start switch configurations, the connection of the VIOLET
wire will be made to the low current start solenoid wire of the ignition switch harness. This wire
have +12 volts when the ignition switch is turned to the “START” (CRANK) position only. This wire
have 0 volts in all other ignition switch positions.

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NOTE: This wire must be connected to the vehicle side of the starter cut relay (when used). For the
electrical neutral switch configuration, this connection must be made between the starter inhibit
relay (when used) and the neutral safety switch as shown in the following diagram.
Failure to connect this wire to the ignition switch side of the neutral safety switch can result in
personal injury and property damage. SEE NEUTRAL START SAFETY TEST FOR FURTHER
DETAILS.
Start Cut Relay
(When Used)
VIOLET Wire
Closed in Park or
Neutral Only
Ignition
Switch
“Start”
“On”
Neutral Safety
Switch
“Acc”
“Off”
Starter
H1/2 & H1/3. Red Wire (2)-- +12V Power Input
Remove the two 20A fuses prior to connecting these wires and do not replace them until the
satellite has been plugged into the control module. These wires are the source of current for all the
circuits the relay satellite will energize. They must be connected to a high current source. Since the
factory supplies (+) 12V to the key switch that is used to operate the motor, it is recommended that
these wires be connected there.
Note: If the factory supplies two separate (+) 12V feeds to the ignition switch, connect one RED
wire of the satellite to each feed at the switch.
H1/4. Yellow Wire –Ignition 1 Output
Connect the YELLOW wire to the ignition 1 wire from the ignition switch. The ignition wire should
receive "12 volts" when the ignition key is in the "ON" or “RUN” and "START" or “CRANK” position.
When the ignition is turned "OFF", the ignition wire should receive "0" voltage.. The YELLOW wire
must be connected.
H1/5. PINK Wire –Ignition 2 Output
Some vehicles have [2] ignition wires that must be power. Connect the PINK wire to the ignition 2
wire from the ignition switch. The ignition wire should receive "12 volts" when the ignition key is in
the "ON" or “RUN” and "START" or “CRANK” position. When the ignition is turned "OFF", the
ignition wire should receive "0" voltage. If the PINK wire is not used, cap the end of the wire.
H1/6. Brown Wire –Accessory Output (Heater /ACC Output)
Connect the BROWN wire to the accessory wire in the vehicle that powers the climate control
system.
An accessory wire will show + 12 volts when the ignition switch is turned to the “ACCESSORY” or
“ON” and “RUN” positions, and will show 0 Volts when the key is turned to the “OFF” and “START”
or “CRANK” position. There will often be more than one accessory wire in the ignition harness. The
correct accessory wire will power the vehicle’s climate control system. Some vehicle may have
separate wires for the blower motor and the air conditioning compressor. In such cases, it will be
necessary to add a relay to power the second accessory wire.
H2: 5 PIN WIRE HARNESS:
H2/1. RED / WHITE Wire –PARKING LIGHT RELAY INPUT --
The RED/WHITE wire is the input to the flashing parking light relay. The connection of the
RED/WHITE wire will determine the output polarity of the flashing parking light relay.
If the vehicle you are working on has +12volt switched parking lights, you don’t need connect this
wire. This wire already connected to +12volt.
If the vehicle’s parking lights are ground switched, cut the RED/WHITE wire, connect the
RED/WHITE wire to chassis ground.
H2/2. WHITE Wire -- PARKING LIGHT RELAY OUTPUT (+12 V 10A OUTPUT) --
Connect the WHITE wire to the parking light wire coming from the headlight switch. Do not connect
the WHITE wire to the dashboard lighting dimmer switch. (Damage to the dimmer will result). The
limitation of the WHITE wire is 10 AMP max. Do not exceed this limit or damage to the alarm and
parking relay will result.
H2/3. BLACK Wire -- SYSTEM GROUND –

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This is main ground connection of the alarm module. Make this connection to a solid section of the
vehicle frame. Do not connect this wire to any existing ground wires supplied by the factory wire
loom, make the connection to the vehicle's frame directly.
H2/4. BROWN Wire –(-) 200mA PROGRAMMABLE OUTPUT (See Alarm Feature I - 4
Programming)
HORN OUTPUT –(Factory Default Setting)
This wire is provided to use the existing vehicle's horn as the alarm system's optional's warning
audible device. It's a transistorized low current output, and should only be connected to the low
current ground output from the vehicle's horn switch.
CHANNEL 4 OUTPUT–(See Alarm Feature I - 4 Programming)
Press and buttons at the same time to remote control the optional electrical device. The
device will 'on' when the button(s) press continuously, and 'off' when the button(s) released.
FACTORY SECURITY REARM SIGNAL OUTPUT–(See Alarm Feature I - 4 Programming)
This wire is designed to rearm a factory installed security system. This wire will supply a pulse
whenever the remote start times out or is shut down using the transmitter and remote door locking..
H2/5. RED Wire -- SYSTEM POWER (+12V CONSTANT) --
The RED wire supplies power to the system. Connect this wire to a constant +12 volt source.
H3. 2 PIN WHITE CONNECTOR FOR THE LED STATUS INDICATOR:
The led indicator status should be mounted in a highly visible area such as top of the dashboard,
on top of the shifter console or on dashboard face. Leave at least 6mm space behind the mounting
location for LED housing. Once a suitable location is chosen, drill a 6mm hole. Run the LED wires
through the hole then press the 2 pin LED housing into the place. Route the LED wires to the
control module.
H4. BLACK 3-PIN CONNECTOR. –Windshield Receiver /Antenna
The windshield receiver/antenna mounts on the windshield (Inside). We suggest you mount it on
the lower left or upper left-hand side of windshield.
Warning! Do not mount in such a manner that it obstructs the driver’s view.
- The receiver/antenna whip must be vertical.
- Remove the protective tape backing.
- Carefully align the receiver/antenna and apply to windshield.
- Route the black connector wire behind the trim and connect to receiver/antenna.
- Connect the other end to the control module.
- Special considerations must be made for windshield glass as some newer vehicles utilize a
metallic shielded window glass that will inhibit or restrict RF reception. In these vehicles, route the
windshield receiver/antenna module away from metallic shielded window glass as far as possible.
H5: 5-PIN MINI WHITE CONNECTOR WIRE HARNESS:
H5/1 ORANGE Wire –(-) 500ma GROUNDED OUTPUT WHEN ARMED --
This wire will become grounded when the alarm is armed. The current capacity of this wire is
200mA. This output can control starter disable, when an intrusion is detected and the system is
triggered. The vehicles prevent from any unauthorized starting.
87
87a
85
30
86
IN4003 Diode
H5/1: ORANGE wire
from control module
“Start”
“On”
White wire
X
Cut
Red wire
Orange wire
“Acc”
“Off”
Starter
H1/1 VIOLET wire (Starter output)
form Heavy Gauge wire harness
Yellow wire to
Ignition Switch
H5/2. YELLOW Wire:- (-) 200ma IGNITION 3 OUTPUT–
This wire provides a 200mA (-) ground output that becomes active 4 seconds before the remote
start unit initialize, and remains grounded while running.
Ignition 3 output:

MEGA 250 INSTALL
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Some newer vehicles use a third ignition wire
which is required to start and keep the vehicle’s
engine running. If this is the case, wire an IGN 3
relay (not supplied) as shown below:
Do not connect any vehicle circuits together, they
are isolated for a resaon.
Yellow Wire
87a
Ignition 3 Wire From
Ignition Key Switch
+ 12 V Constant
Fused 25A Capable
30
85
86
87
Transponder interfacing using relay:
If the vehicle has transponder system installed, you will need to by-pass the system while the
vehicle is operating under the control of the Remote Start Unit. To do this:
1. You will need a transponder key that's already programmed to the vehicle.
2. Remove the trim around the ignition switch.
3. Wrap a thin (28 - 30awg) wire tightly around ignition switch 6 to 8 times and secure it.
4. About 6"down line make another loop of approximately 2"diameter.
5. Place the key inside this loop and secure it to the loop.
6. Connect on end of the (28 - 30awg) wire to pin (87) of the relay module.
7. Connect the other end of the loop wire to Pin (30) of relay module.
8. Connect the pin (86) of the relay module to the ignition wire from the ignition switch.
9. connect the pin (85) of the relay module to the H5/2 Yellow wire of 5-pin mini white connector.
GM VATS KEY OVERRIDE:
If the vehicle has the General Motor VATS system installed, you will need to by-pass the system
while the vehicle is operating under the control of the Remote Start Unit. To do this:
1. Measure the resistance of the resistor pellet on the ignition key then select a resistor within 5%
of the key’s value.
2. Locate the pair of VATS wires in the vehicle, usually a pair of thin gauge wires running from the
ignition switch to the VATS control module.
3. Connect the YELLOW wire from Remote Start Unit to TERMINAL #85 of an external relay.
Connect terminal #86 of the relay to a fused +12 volt.
4. Cut (#1) wire (as shown), and connect the ignition switch side of the cut wire to terminal #87a of
the relay. Connect the other side of the (#1) wire to terminal #30.
5. Connect the previously selseced resistor from terminal #87 to the second(#2) wire (as shown).
To + 12 V
Ignition
Switch
YELLOW wire
Matching Resistor
VATS control Module
87a
86
30
87
85
VAT wire (#1)
VAT wire
(#2)
H5/3. WHITE Wire –(-) 200ma PROGRAMMABLE OUTPUT(See Alarm Feature I - 4
Programming)
DOME LIGHT CONTROL OUTPUT (Factory Default Setting)—
This wire becomes grounded when the dome light controls circuit active. The current capacity of
this wire is 200mA. This wire can control the operation of the interior lights. An optional 10 Amps
relay can be used to this system for interior lights operation.
a). Upon disarming, the interior lights will remain on for 30 seconds.
b). If the vehicle is violated, the interior light will flash for the same duration as the siren.
CHANNEL 4 OUTPUT–(See Alarm Feature I - 5 Programming)

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Press and buttons at the same time to remote control the optional electrical device. The
device will 'on' when the button(s) press continuously, and 'off' when the button(s) released.
GROUND OUTPUT DURING START (CRANK) –(See Alarm Feature I - 5 Programming)
This wire will provide a 200mA ground output while the starter output of the remote start unit is
active. This output can be used to activate the Crank Low/Bulb Test wire found in some GM
vehicles. This wire is also referred to as the ECM wake up wire in some vehicles.
H5/4. PINK Wire –(-) 200ma PROGRAMMABLE OUTPUT(See Alarm Feature I - 3
Programming)
2 STEPS UNLOCK OUTPUT (Factory Default Setting) --
The 2 steps unlock feature will work for the most fully electronic door lock circuit. The vehicle must
have an electronic door lock switch (not the lock knob or key switch), which locks and unlocks all of
vehicle's doors. When wired for this feature, press the disarm (or unlock) button one time will
disarm the alarm and unlock the driver's door only. If, press disarm (or unlock) button two times
within 3 seconds, the alarm will disarm and all doors will unlock.
FACTORY SECURITY DISARM SIGNAL OUTPUT –
This wire is designed to disarm a factory installed security system. This wire sends a negative (-) 1
seconds pulse upon a remote start and remote door unlocking. Some factory systems must be
disarmed to allow remote starting. In most cases, this wire may be connected directly to the factory
alarm disarm wire. The correct wire will show nagative ground when the key is used to unlock the
doors or trunk. This wire is usually found in the kick panel area in the wiring harness coming into
the car body from the door.
START STATUS (Shock Sensor Bypass Control) OUTPUT–
This wire is designed to by-pass shock sensor module. This wire will supply an output at all times
the remote start is operating plus an additional 3 seconds after the remote start unit turn off.
H5/5 . GRAY Wire –(-) 200ma CHANNEL 3 (TRUNK) OUTPUT
This will become a 1 second pulse ground by activate channel 3 on transmitter for two seconds, the
current capacity of this wire is 200 mA. This feature allows you to remote control trunk release or
other electric device.
H6: 5 PIN MINI BLACK CONNECTOR :
H6/1. GREEN Wire –(-) INSTANT START & TURN OFF INPUT –(See Alarm Feature II –4
Programming)
This wires activates and turns off the remote starter each time it sees a momentary ground signal.
Normally only used for testing during installation or when activating the module from an
after-market system.
H6/2. BLACK/WHITE Wire —(-) Remote Start Enable Toggle Switch Input —
—(-) Neutral Safety Switch Input —
When the BLACK/WHITE wire is grounded, the remote start unit is operable. When this wire is
open from ground, the remote start is disable.
1. The optional “remote start toggle switch” can be added on to temporarily disable the Remote
Start Device, it can prevent the vehicle from being remote started accidentally. This feature is
useful if the vehicle is being serviced or stored in an enclosed area. To disable the remote start,
move the optional remote start enable toggle switch to the OFF position. To enable the remote
start, move the optional remote start enable toggle switch to the ON position.
2. If needed, This wire can connect to the PARK/NEUTRAL switch in the vehicle. (See the
TESTING YOUR INSTALLATION GUIDE)
IMPORTANT NOTE: Directly connect the BLACK/WHITE wire to the “GROUND” when this
wire is not used.
H6/3. WHITE/VIOLET Wire –POSITIVE SAFETY SHUT DOWN INPUT
This wire provides an instant shutdown for the remote start, whenever it gets +12volts. If the brake
lights switch in the vehicle switches +12 volts to the brake light circuit, connect this wire to the
output side of the brake switch. This will allow the remote start to shut down if an attempt is made to
operate the vehicle without the key while running under the control of the remote start. In most
vehicles, in order to shift gear, the brake pedal must be depressed. The brake input will in turn
cause the remote start unit to shut off. See below diagram.

MEGA 250 INSTALL
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+12 volts from fuse box
To White/ Violet wire
Brake light bulbs
Switch closes when
brake is depress
H6/4. WHITE/BLACK Wire –NEGATIVE SAFETY SHUT DOWN INPUT --
The WHITE/BLACK wire provides an instant shutdown for the remote start, whenever it is
grounded. Connect the wire to the hood pin switch previously installed. This wire must be routed
though a grommet in the firewall and connected to the hood pin switch.
Important! This connection is a safety wire and must
be connected as shown and tested as specifiled.
Failure to do so may result in personal injury or property
damage. See detail of wiring in the following diagram.
This wire may also be used if the vehicle brake light
circuit switches ground to the brake lights. An isolation
diode must be used for ground switched brake light
circuits and must be connected to the output of the
brake switch.
To: White/Black Wire /
Negative safety
To Vehicle
Brake Switch
Hood Pin Switch
Diode
H6/5. WHITE/RED Wire —Tach Signal connection—
Note: You should connect this wire if you program the Start Feature II –2 to “Engine checking
TACH.” otherwise do not connect this wire and tape the end.
Note: No connection of this wire is required, if you use the voltage or timer checking type mode.
This input provides the remote start system with information about the engine’s revolutions per
minute (RPM). It can be connected to the negative side of the coil in vehicle with conventional coils.
In multi-coil and high energy ignition system locating a proper signal may be more difficult. Once
connected, to test for a tachometer wire, a multi-meter capable of test AC voltage must be used.
The tachometer wire will show between 1V and 6V AC at idle, and will increase as engine RPM
increases. In multi-coil ignition system, the system can learn individual coil wire. Individual coil wires
in a multi-coil ignition system will register lower amounts of AC voltage. Also, if necessary, the
system can use a fuel injector control wire for engine speed sensing. Common locations for a
tachometer wire are the ignition coil itself, the back of the gauges, engine computers, and automatic
transmission computers.
IMPORTANT! Do not test tachometer wires with a test light or logic probe. The vehicle will be
damaged.
How to find a tachometer wire with your multi-meter
1. Set the ACV or AC voltage (12V or 20V is fine.)
2. Attach the (-) probe of the meter to chassis ground.
3. Start and run the vehicle.
4. Probe the wire you suspect of being the tach. wire with the red probe of the meter.
5. If this is the correct wire the meter will read between 1V and 6V.
IMPORTANT NOTE: You must program the “Tach Signal”before trying to remote start.
H7. 2 PIN BLUE CONNECTOR FOR THE VALET SWITCH:
Select a mounting location for the switch that is easily accessible to the driver of the vehicle. The
switch does not have to be concealed, however, concealing the switch is always recommended, as
this provides an even higher level of security to the vehicle. Mount the valet switch in a hidden but
accessible location. Route the valet switch wires to the control module.
H8. 3 PIN DOOR LOCK CONNECTOR:

MEGA 250 INSTALL
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Blue Wire
Green Wire
( - ) Lock Pulse
( + ) Unlock Pulse
( - ) Unlock Pulse
(+) Lock Pulse
I
INSTALL NEW DOOR LOCK MOTOR
Blue Wire
Green Wire
+12V
30
86
87a
85
87
30
86
87a
85
87
3 Pin
Plug To
Alarm
NEGATIVE TRIGGER DOOR LOCK SYSTE
Blue Wire Door Unlock
Green Wire Door Lock
Locking
Master
Switch
To Exiting
Door Lock Relay
POSITIVE TRIGGER DOOR LOCK SYSTEM
Blue Wire Door lock
Green Wire Door Unlock
Locking
Master
Switch
To Exiting
Door Lock Relay
+ 12V
+12V
Master Door
Lock Switch
X
X
Splice
Splice
Cut the Existing
Lock Wire
To Door
Lock
Motor
To Slave Door
Lock switches
Cut the Existing
Unlock Wire
3 Pin Plug
To Alarm
5-WIRE ALTERNATING DOOR LOCK
30
86
87a
85
87
30
86
87a
85
87
+12V
Green Wire
Blue Wire
VACUUM OPERATED CENTROL LOCKING
Green Wire
Blue Wire
+12V
X
Cut
Compressor
Door Switch
30
86
87a
85
87
30
86
87a
85
87
3 Pin
Plug To
Alarm
2 STEP DOOR UNLOCK WIRE CONNECTION FOR
5 WIRE ALTERNATING DOOR LOCKS
+12V
Cut the Existing
Lock Wire
Cut Existing Unlock
Wire
X
Cut the Unlock Wire
Lock
Unlock
OEM Door Master Lock
Switch
OEM Slave
Door Lock
Switch
+12V
Lock
Unlock
To All Other
Door Lock
Motors
H5/4:
5-Pin
Plug
FromA
larm
Pink Wire
x
X
Blue Wire
OEM Driver’s
Door Lock Motor
+ 12V
+ 12V
85
86
87
87A
30
30
87
85
87A
86
30
87
85
87A
86
Green Wire
H8:
3 Pin
Plug
To
Alarm
VACUUM OPERATED DOOR LOCKING SYSTEM:
TYPICAL OF MERCEDES BENZ AND AUDI.
Locate the wire under the driver's kick panel. Use the
voltmeter connecting to ground, verify that you have the
correct wire with the doors unlocked, the voltmeter will
receive "12 volts". Lock the doors and the voltmeter will
read "0 volt". Move the alligator clip to +12V and the
voltmeter will receive "12 volts". Cut this wire and make
connections. Be sure to program door lock timer to
3.5 seconds.(See Alarm Feature II –1 Programming.)

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2 STEP DOOR UNLOCK WIRE CONNECTION FOR
GROUND SWITCHED DOOR LOCKS
Cut Existing Unlock
Wire
X
Lock
Unlock
OEM Door Master Lock Switch
To All Other
Door Lock
Motors
Pink Wire
OEM
Driver's
Door Lock
Motor
Existing Neg.
Lock Wire
Existing Neg.
Unlock Wire
86
30
85
87
87A
+ 12V
Green Wire
Door Lock
Blue Wire
Door Unlock
OEM Door
Lock Relay
H5/4:
5-Pin
Plug
FromA
larm
H8:
3 Pin
Plug
To
Alarm
2 STEP DOOR UNLOCK WIRE CONNECTION FOR
POSITIVE SWITCHED DOOR LOCKS
Cut Existing Unlock
Wire
X
Lock
Unlock
OEM Door Master Lock Switch
To All Other
Door Lock
Motors
Pink Wire
OEM Driver's
Door Lock
Motor
+ 12V
Existing Pos.
Lock Wire
Existing Pos.
Unlock Wire
30
87A
87
86
85
+12V
+ 12V
OEM Door
Lock Relay
86
30
85
87
87A
Green Wire
Door Unlock
Blue Wire Door Lock
H5/4:
5-Pin
Plug
FromA
larm
H8:
3 Pin
Plug
To
Alarm

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PROGRAMMING
A. PROGRAMMING THE REMOTE TRANSMITTER:
Note: This mode will only retain the last 4 remote transmitters programmed. If the transmitter
memory is exceeded, the security system will start deleting transmitters from memory in
chronological order.
1. Turn the Ignition 'switch ‘OFF/ON’ 3 TIMES and stay in ON position. Within 15 seconds.
2. Push the Valet switch 3times and holding in on 3rd push until a long chirp is hearing and the
LED start to flash then release the valet switch. You are now in the Transmitter programming
mode.
3. Press and hold any button of the transmitter until the siren responds with a confirming chirp/ a
flash from parking light / the LED turns on for 2 seconds indicating the signal has been stored
into memory.
4. If you have additional transmitters (up to 4) that need to be programmed, repeat step 3 for each
transmitter.
Exit: Turn Ignition to 'OFF' position, or leave it for 15 seconds. 3 long chirps & 3 parking light
flashes to confirm exit.
B. ALARM FEATURES PROGRAMMING:
ALARM FEATURE “I” PRORAMMING:
1. Turn the Ignition 'switch ‘ON/OFF’ 3 TIMES and stay in OFF position.
2. Push the Valet switch 2times and holding in on 2nd push until one chirp with a long chirp is
hearing and the LED start to flash then release the Programming switch. You are now in the
feature ‘I’ programming mode.
3. Press and release the transmitter button ‘A’ corresponding to the feature ‘A’ you want to
program.
a. The horn chirps and LED pause will indicate newly setting.
b. The factory default settings is always [2] LED flash, [2] horn chirp.
4 Depress the transmitter button ‘A’ again to change the feature. Simple keep re-depressing the
transmitter button ‘A’ again until the module advances to your desired setting.
a. In this case, Press button ‘A’ again, the module would advance to [2] LED flash, [2] horn chirp.
b. Press button ‘A’ again, the module would advance to [3] LED flash, [3] horn chirps etc.
5. Depress the transmitter button ‘B’ corresponding to the feature ‘B’ you wants to program.
Press
Transmitter
Button
One Chirp / LED one pulse
Factory Default Setting
Two Chirps / LED two pulse
Three Chirps / LED three
pulse
1
Chirps on
Chirps off
2
Pathway illumination feature
“off”
Parking light “on” for 30-
second upon an unlock
signal
Parking light “on” for 30-
second upon an unlock
signal & 10-second upon a
lock signal.
3
H5/4 Pink Wire = 2-Step
Door Unlock Output
H5/4 Pink Wire = Factory
Security Disarm Signal
Output
H5/4 Pink Wire = Start
Status (Shock Sensor
Bypass Control) Output
4
H2/4 Brown Wire = Horn
Output
H2/4 Brown Wire = Channel
4 Output
H2/4 Brown Wire = Rearm
Signal Output
5 +
H5/3 White Wire = Dome
Light Output
H5/3 White Wire = Channel
4 Output
H5/3 White Wire = Ground
Output During Start (Crank)
Exit: Turn Ignition to 'ON' position, or leave it for 15 seconds. 3 long chirps & 3 parking light
flashes to confirm exit.
Ground Output During Start (Crank) = This wire will provide a 200mA ground output while the
starter output of the remote start unit is active. This output can be used to activate the Crank
Low/Bulb Test wire found in some GM vehicles. This wire is also referred to as the ECM wake up
wire in some vehicles.
ALARM FEATURE “II” PRORAMMING:
1 Turn the Ignition 'switch ‘ON/OFF’ 3 TIMES and stay in OFF position.

MEGA 250 INSTALL
13
2 Push the Valet switch 4times and holding in on the 4th push until two chirps with a long chirp is
hearing and the LED start to flash then release the valet switch. You are now in the Alarm
feature ‘II’ programming mode.
3 Press and release the transmitter button ‘A’ corresponding to the feature ‘A’ you want to program.
Press
Transmitter
Button
One Chirp /
LED one pulse
Factory Default
Setting
Two Chirps /
LED two pulse
Three Chirps /
LED three pulse
Four Chirps /
LED four pulse
1
0.8-second Door
lock pulses.
3.5-second Door
lock pulse.
Double pulse unlock
Door lock with
“Comfort Feature”
2
Ignition controlled
door locks & unlocks
Ignition controlled
door locks only
Ignition controlled
door unlocks only
Without ignition
controlled door locks
& unlocks
3
Door lock before
start
Door lock after
shut-down
Door lock before
start and Door lock
after shut-down
Without this feature
4
H6/1 Green Wire =
1 Pulse Remote
Start
H6/1 Green Wire =
3 Pulse Remote
Start
Exit: Turn Ignition to 'ON' position, or leave it for 15 seconds. 3 long chirps & 3 parking light
flashes to confirm exit.
Comfort Feature:
Some Vehicles have a special “COMFORT feature”. When you lock the door with the key, you just
have to keep on turning the key on the door about 5 or 7 seconds and the window will close
directly.
If your vehicle with “COMFORT feature” and you wish the door being locked and the window being
closed automatically at the same time by remote control, you can set the alarm feature II-1 “with
comfort feature.”
REMOTE START FEATURE PROGRAM MODE.
START FEATURE “I” PRORAMMING:
1. Turn the Ignition 'switch ‘ON/OFF’ 3 TIMES and stay in OFF position.
2. Push the Valet switch 8times and holding in on the 8th push until Four chirps with a long chirp is
hearing and the LED start to flash then release the valet switch. You are now in the Start feature
‘I’ programming mode.
3. Press and release the transmitter button ‘A’ corresponding to the feature ‘A’ you want to
program.
Press
Transmitter
Button
One Chirp /
LED one pulse
Factory Default
Setting
Two Chirps /
LED two pulse
Three Chirps /
LED three pulse
Four Chirps /
LED four pulse
1
Gasoline Engine
Diesel Engine and
10 seconds warn-up
timer
Diesel Engine and
15 seconds warn-up
timer
Diesel Engine and
20 seconds warn-up
timer
2
10 minutes run time
20 minutes run time
30 minutes run time
5 minutes run time
3
Factory alarm
disarm with channel
3 on
Without this feature
4
Constant parking
light output
Flashing parking
light output
5 +
Press -
button = Activate
Remote Start.
Press +
button = Activate
Remote Start.
Press button =
Activate Remote
Start.

MEGA 250 INSTALL
14
6 +
The Vehicle without
Turbo Mode (The
system Cannot be
Lock / Unlock with
the engine running.)
The Vehicle has
aftermarket Turbo
timer installed:
The system Can be
Lock / Unlock with
the engine running.
Built-in Turbo Timer
Control is Active:
Press and
buttons at the same
time to control
Engine running one
minute.
Built-in Turbo Timer
Control is Active:
Press and
buttons at the same
time to control
Engine running
three minute.
Five chirps = Built-in Turbo Timer Control is Active / Press and
buttons at the same time to control Engine running five minutes.
7 +
3 Hour Time start
2 Hour Time Start
Exit: Turn Ignition to 'ON' position, or leave it for 15 seconds. 3 long chirps & 3 parking light
flashes to confirm exit.
SAFE START (Child safety mode)
Factory defaults setting to press the button twice to start the vehicle.
Programming this feature to eliminate an accidental remote start, when kids enter this transmitter, it
requires: The user presses the transmitter and buttons at the same time to start the vehicle.
START FEATURE “II” PRORAMMING:
1. Turn the Ignition 'switch ‘ON/OFF’ 3 TIMES and stay in OFF position.
2. Push the Valet switch 10 times and holding in on the 10th push until five chirps with a long chirp
is hearing and the LED start to flash then release the valet switch. You are now in the Start
feature ‘II’ programming mode.
3. Press and release the transmitter button ‘A’ corresponding to the feature ‘A’ you want to
program.
Press
Transmitter
Button
One Chirp /
LED one pulse
Factory Default
Setting
Two Chirps /
LED two pulse
Three Chirps /
LED three pulse
Four Chirps /
LED four pulse
1
Exit the programming mode. (3 long chirp & 3 parking light flashes to confirm this exit.)
2 +
Engine Checking
TACH
Engine Checking
Voltage
Engine Checking
OFF
3
RPM learning
Start Timer:
0.6-second
0.8-second (2 chirps), 1.0-second (3
chirps), 1.2-second (4 chirps), 1.4-second
(5 chirps), 1.6-second (6 chirps),
1.8-second (7 chirps), 2.0-second (8
chirps), 3.0-second (9 chirps), 4.0-second
(10 chirps),
4
Low check level for
“Engine Checking
TACH”mode or
Hi check level for
“Engine Checking
Voltage” mode
Hi check level for
“Engine Checking
TACH”mode or
Low check level for
“Engine Checking
Voltage” mode
5 -
Start / Stop the system for TESTING & ADJUSTMENT
Exit: Press the button on the transmitter. 3 long chirps & 3 parking light flashes to confirm exit.
ENGINE CHECKING TACH. / RPM LEARNING
Important Note: You must program the “Tach Signal”before trying to remote start.
1. Turn the Ignition switch ‘ON/OFF’ 3TIMES and stay in OFF position.
2. Push the Valet switch 10 times and hold it until five chirps with a long chirp is hearing and the
LED start to flash then release the valet switch.
3. Press and release the transmitter and buttons at the same time once to set the “Engine
Checking TACH.”. [1] LED flash, [1] chirp to confirm this setting.

MEGA 250 INSTALL
15
4. Press and release the transmitter button once, [1] LED flash, [1] chirp to indicate you are in
feature 5. Start the vehicle with the key. (While the engine is running, the parking light & LED will
flash, If do not, please check tachometer White/Red wire connection. (H6/5)
6. Press and hold the valet switch for 2 seconds until a long chirp and the LED / the parking light
will constantly on for two seconds. The RPM signal is learned.
7. Turns off the ignition switch to stop engine running.
Once you complete step 7, you can adjust and test “Check Level” as below:
CHECK LEVEL PROGRAMMING: (TEST and ADJUST)
1. Press the button twice on the transmitter to start the vehicle.
2. If everything goes well:
a. Press the button twice on the transmitter to stop engine running. You have been
completed this programming successfully.
b. Press button on the transmitter to exit the program mode. There will be 3 long chirps & 3
parking light flashes for confirmation.
3. If the crank time is too short, (The engine did not successfully run before the starter quit
cranking):
a. Press the button on the transmitter to turn ignition lights “OFF”.
Press button on the transmitter to set proper “Check Level ” to Hi position. [2] LED flashes,
[2] chirps to confirm this setting
b. Repeat the step1 –4.
4. If the crank time is too long, (Engine is successfully running, while the starter is still cranking):
a. Press the button on the transmitter to stop engine running.
Press button on the transmitter to set proper “ Check Level ” to Low position. [1] LED flash,
[1] chirp to confirm this setting
b. Repeat the step1 –4.
ENGINE CHECKING VOLTAGE
Important Note: The voltage “Check Level” for most vehicles would be set in “Hi Check Level”,
while in “Engine Check Voltage”mode, the “Check Level” must be set at “HI”
position first.
1. Turn the Ignition 'switch ‘ON/OFF’ 3 TIMES and stay in OFF position.
2. Push the Valet switch 10 times and holding in on the 10th push until five chirps with a long chirp
is hearing then release the valet switch.
3. Press the transmitter and buttons at the same time to set the “Engine Checking Voltage”.
[2] LED flashes, [2] chirps to confirm this setting.
4. Press button on the transmitter to set “Check Level” to “HI”position. [2] LED flashes, [2]
chirps to confirm this setting.
Once you complete step 4, you can adjust and test “Start Timer” as below:
START TIMER PROGRAMMING: (TEST and ADJUST)
1. Press the button twice on the transmitter to start the vehicle.
2. If everything goes well, Wait for 15 seconds:
a. If the engine still running.
I. Press the button twice on the transmitter to stop engine running. You have been
completed this programming successfully.
II. Press button on the transmitter to exit the program mode. There will be 3 long chirps & 3
parking light flashes for confirmation.
b. If the engine shut down after the vehicle has been started.
I. Press the button twice on the transmitter to turn ignition lights “OFF”.
II. Press button on the transmitter to set “Check Level” to LOW position. [1] LED flash,
[1] chirp to confirm this setting
III. Repeat the step1 –2.
3. If the crank time is too long, (Engine is successfully running, while the starter is still cranking):
a. Press the button twice on the transmitter to stop engine running.
b. Press button on the transmitter to set proper “Start Timer”. The chirp & LED pause will
confirm this enter. (Decrease “Start Timer” is necessary.)
c. Repeat the step1 –4.
4. If the crank time is too short, (The engine did not successfully run before the starter quit
cranking):

MEGA 250 INSTALL
16
a. Press the button twice on the transmitter to turn ignition lights “OFF”.
b. Press button on the transmitter to set proper “Start Timer”. The chirp & LED pause will
confirm this enter. (Increase “Start Timer” is necessary.)
c. Repeat the step 1 –4.
ENGINE CHECKING OFF
1. Turn the Ignition 'switch ‘ON/OFF’ 3 TIMES and stay in OFF position.
2. Push the Valet switch 10 times and holding in on the 10th push until five chirps with a long chirp
is hearing and the LED start to flash then release the valet switch.
3. Press the transmitter and buttons at the same time to set the “Engine Checking Off”. [3]
LED flash, [3] chirp to confirm this setting
Once you complete step 3, you can adjust and test “Start Timer” as below:
START TIMER PROGRAMMING: (TEST and ADJUST)
1. Press the button twice on the transmitter to start the vehicle.
2. If everything goes well:
a. Press the button twice on the transmitter to stop engine running. You have been
completed this programming successfully.
b. Press button on the transmitter to exit the program mode. There will be 3 long chirps & 3
parking light flashes for confirmation.
3. If the crank time is too long, (Engine is successfully running, while the starter is still cranking):
a. Press the button twice on the transmitter to stop engine running.
b. Press the button on the transmitter to set proper “Start Timer”. The chirp & LED pause will
confirm this enter. (Decrease “Start Timer” is necessary.)
c. Repeat the step1 –4.
4. If the crank time is too short, (The engine did not successfully run before the starter quit
cranking):
a. Press the button twice on the transmitter to turn ignition lights “OFF”
b. Press button on the transmitter to set proper “Start Timer”. The chirp & LED pause will
confirm this enter. (Increase “Start Timer ” is necessary.)
c.Repeat the step1 –4.
RETURN TO FACTORY DEFAULT SETTING:
1. Turn the ignition ON then OFF 3 TIMES and stay in OFF position.
2. Push the Valet switch 12 times and holding in on the 12th push until Six chirp with a long chirp is
hearing and the LED start to flash then release the valet switch. You are now in the “Return To
Factory Default Setting” programming mode.
ALARM FEATURE ALL RETURNS TO FACTORY DEFAULT SETTING:
3. Press the transmitter and buttons at the same time for 5 seconds, there will be a
confirmation six chirp with 3 long chirp and the LED turns On for 2 seconds to confirm the system
“Alarm Feature I & II Programming all returns to factory default setting.
START FEATURE ALL RETURNS TO FACTORY DEFAULT SETTING:
4. Press button first, within 3 seconds press and hold the and buttons at the same time
for 5 seconds, there will be a confirmation six chirp with 3 long chirp and the LED turns On for 2
seconds to confirm the system “Start Feature I & II Programming all returns to factory default
setting.
SHUTDOWN DIAGNOSTICS
The unit has the ability to report the cause of the last shutdown of the remote start system.
1. Turn the Ignition 'switch to ‘ON position.
2. Press the button on the transmitter.
3. The LED will now report the last system shutdown by flashing for one minute in the following
grouped patterns:
LED
Flashes
Shutdown Mode
1
(-) Safety Shutdown input (Hood)or
1. Close the hood.
2. Check H6/4 White/ Black wire connection.
(+) Safety Shutdown input or
3. Check H6/3 White/ Violet wire connection.

MEGA 250 INSTALL
17
Neutral Safety Switch input fail
4. Move the Enable Toggle Switch to “ON”
position. (If installed)
5. Move the gear selector to “Park”/ “NEUTRAL”
position.
6. Check H6/2 Black/White wire connection.
3
No RPM (Engine Checking TACH.) or
Check H6/5 White/Red wire connection
Low Voltage (Engine Checking Voltage
Program the “Check Level” from
“Hi Check Level” to “Low Check Level”
5
Over-rev
6
System timed out
7
Transmitter
8
Tach. Signal has not been learned
Re-learning the RPM (Start Feature II –2 / 3)
TESTING YOUR INSTALLATION:
Caution!! The follow procedure must be performed after the installation of the Remote Start Device. It
is the responsibility of the installing technician to complete these tests. Failure to test the unit in the
following manner may result in personal injury, property damage, or both.
1. Test the BRAKE shutdown circuit: With the vehicle in park (P), start the vehicle using the remote
transmitter, Once the engine is running, press the brake pedal. The vehicle should shut down
immediately. If the vehicle continues to run, check the brake circuit WHITE/ VIOLET wire (H6/3)
connection.
2. Test the HOOD PIN shutdown circuit: Start the vehicle using the remote transmitter, Once the
engine is running, pull the hood release and raise the hood. The vehicle should shut down
immediately. If the vehicle continues to run, check the hood pin WHITE/ BLACK wire (H6/4)
connection.
3. NEUTRAL START SAFETY TEST:
1. Set the vehicle parking brake.
2. Block the drive wheels to prevent vehicle movement.
3. Sitting in the vehicle, turn the ignition switch to “ON” or “RUN” position. But do not start the
engine.
4. Step on the brake pedal and shift the gear selector into “DRIVE” (D).
5. Put your foot over the brake pedal but do not press down on it. Be ready to step on the brake to
shut down the Remote Start Device.
6. Start the vehicle using remote transmitter.
a. If the starter does not engage, the test is complete.
b. If the starter engages, immediately step on the brake pedal to shut down the system, recheck
your VIOLET wire (H1/1 starter output wire) connection. The heavy gauge VIOLET wire must
be connected to the ignition switch side of the Neutral Start Switch. If the vehicle you are
working on does not have an Electrical Neutral Safety Switch, it will be necessary to
reconfigure the Remote Starts Wiring to accommodate this vehicle. The information
concerning the Mechanical Neutral Safety Switch provided below will help you to determine if
the vehicle you are working on has this type of safety switch and will provide alternate wiring
methods to accommodate this situation.
MECHANICAL NEUTRAL SAFETY SWITCH CONSIDERATIONS:
Mechanical neutral safety switch configurations differ slightly in that they do not offer the same level of
safety when installing a remote start device. Often when the ignition switch is turned off while the gear
selector is in any position other than park or neutral, the mechanical function will not allow the key to
be turned to the start position or be removed from the ignition cylinder. This configuration prevents
mechanical operation while the vehicle is in gear but offers no consideration for electrical operation.
Because of this potential problem, this installation requires the additional connection of a safety wire
from the remote start device to the vehicle PARK/NEUTRAL ECM input or the vehicle key in sensor.
This connection will prevent remote start operation if the key is left in the ignition switch regardless of
the gear selector position.
PARK/NEUTRAL ECM INPUT:
The Park/Neutral ECM input is the preferred method of installation. This not only maintains the
integrity of the factory circuit, it is also the easiest to install, providing the vehicle you are working on
has this ECM input.
The installation required for this application (shown below), indicates in the slight reconfiguration of

MEGA 250 INSTALL
18
the control switch wiring. Shown is a typical GM Park/Neutral ECM input circuit. To connect the
Remote Start unit to the GM Park/Neutral ECM input:
1. Locate the Orange/Black reference wire in the “C2” connector found at the ECM in GM B Body
vehicles or, locate the equivalent reference wire in the vehicle you are installing the Remote Start
Unit in.
2. Connect the BLACK/WHITE Neutral Safety Switch wire (H6/2) to this reference wire.
NOTE: If the optional remote starts enable toggle switch is installed, connect the one side the enable
switch to this reference wire and connect the other side of the enable switch to the BLACK/WHITE
Neutral Safety Switch wire (H6/2) of the Remote Start unit.
The reference diagram below shows a typical GM B Body ECM reference wire and how it is to be
connected to the Remote Start Unit.
Ignition
P
1
P
2
P
D
P
N
P
R
P
Electronic Control Module (ECM)
Solid State, Do Not Measure
Resistance
To Neutral Safety
Switch Input wire
Black/White (H6/2)
Optional Enable Switch
KEY IN SENSOR CIRCUITS:
If the vehicle you are working on does not have or you cannot locate the ECM reference wire, there
are two alternatives available. Although not preferred, the vehicle Key In Sensor may be reconfigured
to allow a margin of safety and will prevent the vehicle with a Mechanical Neutral Start Switch from
starting in gear.
WE ADVISES THAT YOU MAINTAIN THE FACTORY CIRCUIT WHENEVER POSSIBLE. The
following two circuits may be used only if the above circuit is not available.
NOTE: When completing an installation using either of the following key in sensor circuits, if the
operator inserts the ignition key while the vehicle is running under the control of the Remote Start, the
vehicle will shut down. This must be explained to the operator as it is in contrast to the normal
operation of a vehicle utilizing an electrical neutral start switch and is inconsistent with the operators
manual.
Additional information concerning Key in Sensor methods 1&2 are listed below and should be
reviewed before considering either alternative.
Method 1 will allow the safety required for the remote start unit and prevent the vehicle from starting
while in any gear other than Park or Neutral while the key is in the ignition cylinder however, if the key
is left in the ignition switch and the door is left opened, the added relay will be energized causing a
150mA drain on the battery.
Method 2 will allow the safety required for the remote start unit and prevent the vehicle from starting
while in any gear other than Park or Neutral while the key is in the ignition cylinder however, the
original factory key in chime module will not alert the owner that the key has been left in the ignition
switch. In addition, this may also effect other warning tones such as the light on reminder.
These situations should be carefully considered before altering the vehicle’s wiring and must be fully
explained to the consumer.
METHOD 1
+ 12 V
Ignition Key In Sensor
Switch Closes with Key In
Ignition Cylinder
Switch
Drivers Door Pin Switch
87a
86
30
87
85
Key In
Chime Module
Connected to (-) Negative
Safety Input Wire
White/ Black (H6/4)
To Hood Pin Switch Safety
Shut Down (H6/4)
1N4003
+ 12V
To connect to the key in sensor as shown in method 1:
A. Locate the control wire that connects the drivers door pin switch to the key in sensor switch.
B. Cut this wire and connect the ignition cylinder side to chassis ground.
C. Locate the key in sensor switch wire that connects the chime module to the ignition cylinder.
D. Cut this wire and connect the ignition cylinder side to terminal 30 of a P&B VF45F11 or equivalent
relay.

MEGA 250 INSTALL
19
E. Connect the cathode (striped) side of a 4003 series diode to this same wire, and connect the (non
striped) side to the negative safely input wire (WHITE/ BLACK) (H6/4) of the Remote Start Unit.
F. Connect terminal 86 of the relay to a fused + 12 volt constant battery source.
G. Connect terminal 87 of the relay to the Chime Module side of the previously cut wire in step D.
H. Connect terminal 85 of the relay to the Driver’s Door side of the pin switch wire previously cut in
step B.
Note: A second 4003 series diode may be required to maintain the integrity of the hood open, shut
down circuit. If this is the case, it must be installed as shown in the diagram above. The anode (Non
Stripped) side must be connected to the WHITE/ BLACK wire (H6/4) of the Remote Start Unit. The
cathode (Striped) side must be connected to the hood pin switch.
METHOD 2
Ignition Key In Sensor
Switch Closes with Key
In Ignition Cylinder
Switch
Connected to (-) Negative
Safety Input Wire
White/ Black (H6/4)
To Hood Pin Switch
Safety Shut Down (H6/4)
1N4003
To connect to the key in sensor circuit as shown for method 2:
A. Locate the control wire that connects the drivers door pin switch to the key in sensor switch.
B. Cut this wire and connect the ignition cylinder side to chassis ground.
C. Locate the key in sensor switch wire that connects the chime module to the ignition cylinder.
D. Cut this wire and connect the ignition cylinder side to the Remote Start Negative Safety Shut
down wire WHITE/ BLACK (H6/4), using a 4003 series diode as shown above.
Note: A second 4003 series diode may be required to maintain the integrity of the hood open, shut
down circuit. If this is the case, it must be installed as shown in the diagram above. The anode (Non
Striped) side must be connected to the WHITE/ BLACK wire (H6/4) of the Remote Start Unit. The
cathode (Striped) side must be connected to the hood pin switch.
AFTER THE CONNECTION OF THE NEUTRAL START SAFETY WIRE AS INDICATED IN ANY OF
THE PREVIUOS ALTERNATE CONFIGURATINS, THIS CIRCUIT MUST BE TESTED FOR
OPERATION.
Retest by following the steps outlined in the NEUTRAL START SAFETY TEST shown in this manual.
This device complies with part 15 of the FCC rules. Operation is subject to the following two
conditions.
(1) This device may not cause harmful interference, and
(2) This device must accept any interference received, including interference that may cause
undesired operation.

MEGA 250 INSTALL
20