Directed Electronics Python 450 ESP User manual

450 ESP
Installation Guide
© 2001 Directed Electronics, Inc. Vista, CA N552 7-01
Rev. K 1.0
NEW!
Outboard XHF Receiver for
Extended Range

2© 2000 Directed Electronics, Inc. Vista, CA
table of contents
Bitwriter™, Code Hopping™, DEI®, Doubleguard®, ESP™, FailSafe®, Ghost Switch™,
Learn Routine™, Nite-Lite®, Nuisance Prevention Circuitry®, NPC®, Revenger®, Silent
Mode™, Soft Chirp®, Stinger®, Valet®, Vehicle Recovery System®, VRS®, and Warn
Away® are all Trademarks or Registered Trademarks of Directed Electronics, Inc.
Wiring Quick Reference Guide . . . . . . . . . . . . 3
Warning! Safety First . . . . . . . . . . . . . . . . . . 4
Installation Points to Remember . . . . . . . . . . 5
Before Beginning Installation . . . . . . . . . . . 5
Finding the Tachometer Wire. . . . . . . . . . . . 5
Finding the Wait-To-Start Bulb Wire for Diesels. 6
After the Installation . . . . . . . . . . . . . . . . 6
Wiring Diagrams. . . . . . . . . . . . . . . . . . . . . . 7
Primary Harness (H1) Wiring Diagram . . . . . . 7
Remote Start Ribbon Harness Wiring Diagram . . 7
Heavy Gauge Relay Satellite Wiring Diagram. . 8
Auxiliary Harness (H2) Wiring Diagram . . . . . 8
Remote Start Harness (H3) Wiring Diagram . . 8
Primary Harness (H1) Wire Connection Guide. . 9
Relay Satellite Key Switch Interface Wire
Connection Guide . . . . . . . . . . . . . . . . . . . . 12
Auxiliary Harness (H2) Wire Connection Guide . 13
Remote Start Harness (H3)
Wire Connection Guide . . . . . . . . . . . . . . . . 15
Neutral Safety Switch Interface . . . . . . . . . . 17
Testing the Neutral Safety Switch. . . . . . . . 17
1995 and Newer Vehicle Anti-Theft
Systems (Immobilizers). . . . . . . . . . . . . . . . 19
Passlock I and Passlock II (PL-1 and PL-2). . 19
Passlock II (PK-3), Transponder-Based Systems. 20
Bypassing GM Vehicle Anti-Theft Systems. . . . 20
Plug-in LED and Valet/Program Switch . . . . . . 21
Door Lock Harness (H4) Wire Connection Guide . 22
Positive-Triggered, Relay Driven
Systems (Type A) . . . . . . . . . . . . . . . . . . 23
Negative-Triggered, Relay Driven
Systems (Type B) . . . . . . . . . . . . . . . . . . 24
Reversing Polarity System (Type C) . . . . . . . 25
Adding One or More After-Market
Actuators (Type D) . . . . . . . . . . . . . . . . . 26
Electrically Activated Vacuum (Type E) . . . . 27
One-Wire System, (Type F) . . . . . . . . . . . . 27
Type G: Positive (+) Multiplex . . . . . . . . . . 28
Type H: Negative (-) Multiplex . . . . . . . . . . 23
Programming Jumpers . . . . . . . . . . . . . . . . . 30
Light Flash (+)/(-) . . . . . . . . . . . . . . . . . 30
Tach Threshold On/Off . . . . . . . . . . . . . . . 30
Transmitter/Receiver Learn Routine. . . . . . . . 31
Transmitter Configurations. . . . . . . . . . . . . . 33
Standard Configuration. . . . . . . . . . . . . . . 33
Single Button Arm/Disarm Configuration . . . 33
Operating-Settings Learn Routine . . . . . . . . . 34
Feature Menus . . . . . . . . . . . . . . . . . . . . . . 36
Menu #1 . . . . . . . . . . . . . . . . . . . . . . . . 36
Menu #2 . . . . . . . . . . . . . . . . . . . . . . . . 36
Feature Descriptions . . . . . . . . . . . . . . . . . . 37
Menu #1 . . . . . . . . . . . . . . . . . . . . . . . . 37
Menu #2 . . . . . . . . . . . . . . . . . . . . . . . . 38
Tach Learning. . . . . . . . . . . . . . . . . . . . . . . 39
Shutdown Diagnostics . . . . . . . . . . . . . . . . . 40
Rapid Resume Logic . . . . . . . . . . . . . . . . . . 41
Timer Mode . . . . . . . . . . . . . . . . . . . . . . . . 41
Valet Mode. . . . . . . . . . . . . . . . . . . . . . . . . 42
Safety Check . . . . . . . . . . . . . . . . . . . . . . . 42
Troubleshooting . . . . . . . . . . . . . . . . . . . . . 43
The Bitwriter®(p/n 998T)
requires chip version 1.4 or
newer to program this unit.

© 2000 Directed Electronics, Inc. Vista, CA 3
wiring quick reference guide

4© 2000 Directed Electronics, Inc. Vista, CA
warning! safety first
The following safety warnings must be observed at all times:
■Due to the complexity of this system, installation of this product must only be performed by an authorized
DEI dealer.
■When properly installed, this system can start the vehicle via a command signal from the remote control
transmitter. Therefore, never operate the system in an area that does not have adequate ventilation. The fol-
lowing precautions are the sole responsibility of the user; however, authorized DEI dealers should make the
following recommendations to all users of this system:
1. Never operate the system in an enclosed or partially enclosed area without ventilation (such as a garage).
2. When parking in an enclosed or partially enclosed area or when having the vehicle serviced, the remote
start system must be disabled using the installed toggle switch.
3. It is the user's sole responsibility to properly handle and keep out of reach from children all remote
control transmitters to assure that the system does not unintentionally remote start the vehicle.
4. THE USER MUST INSTALL A CARBON MONOXIDE DETECTOR IN OR ABOUT THE LIVING AREA ADJACENT
TO THE VEHICLE. ALL DOORS LEADING FROM ADJACENT LIVING AREAS TO THE ENCLOSED OR PAR-
TIALLY ENCLOSED VEHICLE STORAGE AREA MUST AT ALL TIMES REMAIN CLOSED.
■Use of this product in a manner contrary to its intended mode of operation may result in property damage,
personal injury, or death. Except when performing the Safety Check outlined in this installation guide, (1)
Never remotely start the vehicle with the vehicle in gear, and (2) Never remotely start the vehicle with the
keys in the ignition. The user will be responsible for having the neutral safety feature of the vehicle period-
ically checked, wherein the vehicle must not remotely start while the car is in gear. This testing should be
performed by an authorized DEI dealer in accordance with the Safety Check outlined in this product instal-
lation guide. If the vehicle starts in gear, cease remote start operation immediately and consult with the user
to fix the problem immediately.
■After the remote start module has been installed, test the remote start module in accordance with the Safety
Check outlined in this installation guide. If the vehicle starts when performing the Neutral Safety Shutdown
Circuit test, the remote start unit has not been properly installed. The remote start module must be removed
or properly reinstalled so that the vehicle does not start in gear. All installations must be performed by an
authorized DEI dealer. OPERATION OF THE REMOTE START MODULE IF THE VEHICLE STARTS IN GEAR IS CON-
TRARY TO ITS INTENDED MODE OF OPERATION. OPERATING THE REMOTE START SYSTEM UNDER THESE
CONDITIONS MAY RESULT IN PROPERTY DAMAGE OR PERSONAL INJURY. IMMEDIATELY CEASE THE USE OF
THE UNIT AND REPAIR OR DISCONNECT THE INSTALLED REMOTE START MODULE. DEI WILL NOT BE HELD
RESPONSIBLE OR PAY FOR INSTALLATION OR REINSTALLATION COSTS.

© 2000 Directed Electronics, Inc. Vista, CA 5
installation points to remember
q
IMPORTANT! This product is designed for fuel-injected, automatic transmission vehicles only.
Installing it in a standard transmission vehicle is dangerous and is contrary to its intended use.
■Please read this entire installation guide before beginning the installation. The installation of this remote
start system requires interfacing with many of the vehicle’s systems. Many new vehicles use low-voltage or
multiplexed systems that can be damaged by low resistance testing devices, such as test lights and logic
probes (computer safe test lights). Test all circuits with a high quality digital multi-meter before making con-
nections.
■Do not disconnect the battery if the vehicle has an anti-theft-coded radio. If equipped with an air bag, avoid
disconnecting the battery if possible. Many airbag systems will display a diagnostic code through their
warning lights after they lose power. Disconnecting the battery requires this code to be erased, which can
require a trip to the dealer.
■Check with the customer on status LED location.
■Remove the domelight fuse. This prevents accidentally draining the battery.
■Roll down a window to avoid being locked out of the car.
To test for a tachometer wire, a multimeter capable of testing AC voltage must be used. The tachometer wire will
show between 1V and 6V AC. In multi-coil ignition systems, the system can learn individual coil wires. 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 using a test light or logic probe! This will damage the vehicle.
How to find a tachometer wire with your multimeter:
1. Set to 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 tachometer wire with the red probe of the meter.
5. If this is the correct wire the meter will read between 1V and 6V.
finding the tachometer wire
before beginning the installation

6© 2000 Directed Electronics, Inc. Vista, CA
In diesel vehicles it is necessary to interface with the wire that turns on the WAIT TO START light in the dash-
board. This wire illuminates the bulb until the vehicle’s glow plugs are properly heated. When the light goes out
the vehicle can be started. This wire is always available at the connector leading to the bulb in the dashboard.
It can also be found at the Engine Control Module (ECM) in many vehicles.
To test and determine the polarity of this wire:
1. Set your multimeter to DCV or DC voltage (12 or 20V is fine).
2. Attach the (+) probe of the meter to (+)12V.
3. Probe the wire that you suspect leads to the bulb with the (-) probe of the meter.
4. Turn the ignition switch to the ON position.
5. If the meter indicates 12 volts until the light goes out you have isolated the correct wire and the wire's polar-
ity is negative (ground while the bulb is on).
6. If the meter reads zero volts until the light goes out and then reads 12 volts, you have isolated the correct
wire and the wire's polarity is positive.
■Test all functions. The “Using Your System” section of the Owner's Guide is very helpful when testing.
■Review and complete the Safety Check section of this guide prior to the vehicle reassembly.
after the installation
finding the wait-to-start bulb wire for diesels

© 2000 Directed Electronics, Inc. Vista, CA 7
wiring diagrams
The primary harness supplied with this unit is the standard 12-pin harness used by DEI®security systems. Three
wires in the plug are not used. The upgrade from this unit to a security system would simply require unplugging
and exchanging control units and connecting the necessary wires to the vehicle. The functions of all the wires
that are used in the primary harness are outlined in the following wiring diagram and the wire connections are
described in the wire connection guides.
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______
______ PURPLE (-) 200 MA STARTER RELAY TURN-ON
ORANGE (-) 200 MA ACCESSORY RELAY TURN-ON
PINK (-) 200 MA IGNITION RELAY TURN-ON
YELLOW (+) IGNITION INPUT TO REMOTE START
RED (+) CONSTANT POWER
1
2
3
4
5
remote start ribbon harness wiring diagram
RED/WHITE (-)200 MA CHANNEL 2 PROGRAMMABLE OUTPUT
RED (+) CONSTANT POWER INPUT
BROWN (-) HORN H0NK OUTPUT
OPEN NO WIRE
BLACK (-) CHASSIS GROUND INPUT
VIOLET NO FUNCTION
BLUE NO FUNCTION
GREEN NO FUNCTION
BLACK/WHITE (-)200 MA DOMELIGHT SUPERVISION OUTPUT
WHITE/BLUE (-) REMOTE START ACTIVATION INPUT
WHITE (+)/(-) SELECTABLE LIGHT FLASH OUTPUT
ORANGE (-) 500 MA ARMED OUTPUT
H1/1
H1/2
H1/3
H1/4
H1/5
H1/6
H1/7
H1/8
H1/9
H1/10
H1/11
H1/12
primary harness (H1) wiring diagram

8© 2000 Directed Electronics, Inc. Vista, CA
______
______
______
______
______
______
______
______
______
______
______
______
______
______ BLACK/WHITE (-) NEUTRAL SAFETY SWITCH INPUT
VIOLET/WHITE TACHOMETER INPUT WIRE
BROWN (+) BRAKE SWITCH SHUTDOWN WIRE
GRAY (-) HOOD PINSWITCH SHUTDOWN WIRE
BLUE/BLACK (-) 200 MA OPTIONAL THIRD IGNITION OUTPUT
BLUE (-) 200 MA STATUS/FACTORY SECURITY REARM OUTPUT
H3/1
H3/2
H3/3
H3/4
H3/5
H3/6
remote start harness (H3) wiring diagram
LIGHT GREEN/BLACK (-) FACTORY DISARM/SPECIAL ACCESSORY
GRAY/BLACK (-) WAIT-TO-START INPUT
H2/1
H2/2
auxiliary harness (H2) wiring diagram
PINK/WHITE (+) OUTPUT TO SECOND IGNITION CIRCUIT
PURPLE (+) OUTPUT TO STARTER CIRCUIT
ORANGE (+) OUTPUT TO ACCESSORY CIRCUIT
PINK (+) OUTPUT TO IGNITION CIRCUIT
RED (+) HIGH CURRENT 12V INPUT
RED (+) HIGH CURRENT 12V INPUT
1
2
3
4
5
6
heavy gauge relay satellite wiring diagram

© 2000 Directed Electronics, Inc. Vista, CA 9
primary harness (H1) wire connection guide
This wire supplies a (-) 500 mA ground as long as the system is armed. This output ceases as soon as the system
is disarmed. The orange wire is pre-wired to control the 8618 starter kill relay.
NOTE: If connecting the orange wire to control another module, such as a 529T or 530T window
controller, a 1 amp diode (type 1N4004) will be required. Insert the diode as shown below.
IMPORTANT! Never interrupt any wire other than the starter wire.
As shipped, this wire should be connected to the (+) parking light wire. If the light flash polarity jumper is moved
to the opposite position (see Internal Programming Jumpers section), this wire supplies a (-)200 mA output. This
is available for driving (-) light control wires in Toyota, Lexus, BMW, some Mitsubishi, some Mazda, and various
other models.
(+) Positive Light Flash Output
H1/2 WHITE (+/-) selectable light flash output
H1/1 ORANGE (-) ground-when-armed output

10 © 2000 Directed Electronics, Inc. Vista, CA
(-) Light Flash Output
NOTE: For parking light circuits that draw 10 amps or more, the internal jumper must be switched
to a (-) light flash output. (See the Internal Programming Jumper section of this guide.) P/N 8617
or a standard automotive SPDT relay must be used on the H1/2 light flash output harness wire.
Sending a negative pulse to this wire will initiate the remote start sequence. This wire can be wired to an optional
momentary switch to activate the remote start system.
Connect this wire to the optional domelight supervision relay as shown below:
IMPORTANT! This output is only intended to drive a relay. It cannot be connected directly to the
domelight circuit because the output cannot support the current draw of one or more light bulbs.
H1/4 BLACK /WHITE (-) 200 mA domelight supervision output
H1/3 WHITE/BLUE (-) activation input

© 2000 Directed Electronics, Inc. Vista, CA 11
Remove any paint and connect this wire to bare metal, preferably with a factory bolt rather than your own screw.
(Screws tend to either strip or loosen with time.) We recommend grounding all your components, including the
siren, to the same point in the vehicle.
This wire supplies a (-) 200 mA output that can be used to honk the vehicle horn. It outputs a single pulse when
locking the doors with the remote, and two pulses when unlocking with the remote. This wire will also output
pulses for 30 seconds when the Panic Mode is activated. If the vehicle has a (+) horn circuit, an optional relay
can be used to interface with the system, as shown below.
Before connecting this wire, remove the supplied fuse. Connect to the battery positive terminal or the constant
12V supply to the ignition switch.
NOTE: Always use a fuse within 12 inches of the point you obtain (+)12V. Do not use the 10A fuse
in the harness for this purpose. This fuse is intended to protect the module.
H1/11 RED (+)12V constant power input
H1/10 BROWN (-) horn honk output
H1/8 BLACK (-) chassis ground connection

12 © 2000 Directed Electronics, Inc. Vista, CA
When the system receives the code controlling Channel 2, for longer than 1.5 seconds, the RED/WHITE wire will
supply an output as long as the transmission continues. This is often used to operate a trunk/hatch release or
other relay-driven function. This output can also be programmed to provide the following types of output: Instant
validity, latched, latched-reset with ignition, 30-second timed, or second unlock output. (See Features Description
section of this guide for details.)
IMPORTANT! Never use this wire to drive anything except a relay or low-current input! The transis-
torized output can only supply 200 mA of current. Connecting directly to a solenoid, motor, or other
high-current device will cause it to fail.
relay satellite key switch interface wire
connection guide
All except the red heavy gauge wires leading from the relay satellite are used to energize high current circuits
in the vehicle. It is crucial that these connections are made correctly so that they are capable of handling the
current demands. For this reason, scotch locks, T-taps and other such connectors should not be used.
Remove the two 30 amp 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 satel-
lite 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.
RED (2) (+)12V input for relays
H1/12 RED/WHITE Channel 2, (-) 200 mA output

© 2000 Directed Electronics, Inc. Vista, CA 13
Connect this wire to the ignition wire in the vehicle.
Connect this wire to the accessory wire in the vehicle that powers the climate control system.
Connect this wire to the starter wire in the vehicle.
Connect this wire to the second ignition wire in the vehicle.
auxiliary harness (H2) wire connection guide
Connect this wire to the wire in the vehicle that sends the signal to turn on the WAIT-TO-START bulb in the dash-
board. In most diesels the wire is negative (ground turns on the bulb) and the GRAY/BLACK can be directly
connected to the wire in the vehicle. If the vehicle uses a positive wire (12V to turn on the bulb) a relay must
be used to change the polarity. (See Finding the Wait-To-Start Bulb Wire For Diesels section of this guide.) Here are
some common colors of this wire:
■Chevrolet and GMC trucks: Light Blue or Dark Blue
■Ford Trucks: Black/Pink
■Dodge Ram Trucks: Orange/Black or Black/Orange
NOTE! A 1-amp diode must be installed in line on the factory wire between the wait-to-start indi-
cator and the ECM. (See the following diagram for details.)
H2/1 GRAY/BLACK (-) diesel wait-to-start bulb input
PINK/WHITE (+) output to second ignition circuit
PURPLE (+) starter output
ORANGE (+) accessory output
PINK (+) ignition output

14 © 2000 Directed Electronics, Inc. Vista, CA
This wire sends a negative pulse every time the remote start is activated. This can be used to pulse the disarm
wire of the vehicle's factory anti-theft device. Use a relay to send a (-) or (+) pulse to the disarm wire as shown
in the diagrams below. This wire can also be used as a special accessory output. (See Feature Descriptions section
of this guide.)
Relay for Negative (-) Disarm Wire Relay for Positive (+) Disarm Wire
H2/2 LIGHT GREEN/BLACK (-) auxiliary output

© 2000 Directed Electronics, Inc. Vista, CA 15
remote start harness (H3) wire connection guide
This wire supplies a 200mA output as soon as the module begins the remote start process. The H3/1 BLUE wire
can also be used to rearm a factory anti-theft system when the remote start shuts down. (See the Feature
Descriptions section in this guide for details about programming this output.)
This output provides 200mA as soon as the remote starter is activated. It can be used to power a relay to ener-
gize a positive (+) third ignition as shown below. This output is capable of driving two relays if necessary.
This wire MUST be connected to hood pinswitch. This input will disable or shut down the remote start when the hood
is opened.
This wire MUST be connected to the vehicle's brake light wire. This is the wire that shows (+) 12V when the brake
pedal is pressed. The remote start will be disabled or shut down any time the brake pedal is pressed.
This input provides the module with information about the engine's revolutions per minute (RPMs). It can be
connected to the negative side of the coil in vehicles with conventional coils. In multi-coil and high energy igni-
tion systems locating a proper signal may be more difficult. (See Installation Points to Remember section of this
guide for finding the tachometer wire.) Once connected, you must teach the system the tach signal. (See Tach
Learning section of this guide.)
H3/5 VIOLET/WHITE tachometer input
H3/4 BROWN (+) brake switch input
H3/3 GRAY (-) hood pinswitch input
H3/2 BLUE/BLACK (-) optional third ignition output
H3/1 BLUE status/factory security rearm output

16 © 2000 Directed Electronics, Inc. Vista, CA
Connect this wire to the toggle (override) switch as shown in Figure A. Connect the other wire from the toggle
switch to the PARK/NEUTRAL switch in the vehicle. This wire will test with ground with the gear selector either
in PARK or NEUTRAL. This will prevent the vehicle from accidentally being started while in a drive gear. This input
MUST rest at ground in order for the remote start system to operate. Connected properly the vehicle will only
start while in PARK or NEUTRAL.
In some vehicles, the PARK/NEUTRAL position switch activates a factory starter lock out that will not allow the
starter to operate in a drive gear. In these vehicles, connect this wire to the toggle switch as shown in Figure
B. Connect the other wire from the toggle switch to chassis ground.
Figure A Figure B
IMPORTANT! Always perform the Vehicle Safety Check section of this guide to verify that the vehicle
cannot be started in ANY drive gear and that the override switch is functioning properly.
neutral safety switch interface
Some vehicles combine the column shift mechanism and the mechanical neutral safety switch into one mechan-
ical part. In these vehicles, it is impossible to interface the remote start system before the neutral safety switch.
With this type of vehicle, if the vehicle is left in a drive gear and the remote start system is activated, the vehicle
will move and may cause damage to persons or property.
According to available information, vehicles known to be manufactured this way are most General Motors trucks,
sport utility vehicles and column shifting passenger vehicles. Available information also indicates that pre-1996
Dodge Dakota pickups with 2.5 liter motors are also manufactured this way.
GM vehicles that have the neutral safety switch built into the column shifter can usually be identified by a purple
starter wire. Typically, vehicles that use an outboard mechanical switch use a yellow wire from the ignition switch
to the mechanical switch and a purple wire from the mechanical switch to the starter itself. Remember, this is
only a rule of thumb and is not intended as a substitute for proper testing.
H3/6 BLACK/WHITE neutral safety switch input

© 2000 Directed Electronics, Inc. Vista, CA 17
We suggest the following procedure to test for vehicles manufactured in this way.
NOTE: You must complete the remote start system installation before doing the following test.
Ensure that the remote start system is functioning normally. This includes connecting to the brake
as a shut-down.
1. Make sure there is adequate clearance to the front and rear of the vehicle because it may move slightly.
2. Make sure the hood is closed and there are no remote start shut-downs active.
3. Set the emergency brake.
4. Turn the key to the "run" position, this will release the shifter.
5. Place the car in drive (D).
6. Place your foot directly over the brake pedal, but do not depress it. Be ready to step on the brake if the
starter engages.
7. Activate the remote start system.
8. If the starter engages, immediately depress the brake to shut the remote start system down. If the starter
does not engage, no additional safety system is required.
If the starter engages and the vehicle is a General Motors product or Dodge Dakota pickup, refer to the follow-
ing text and diagrams for an alternative shut-down method which will prevent the starter from engaging. If the
vehicle is not a General Motors product or a Dodge Dakota pickup, please call DEI® Technical Support for an alter-
native shut-down method. Do not return the vehicle to the customer until this feature is properly installed!
Every vehicle built this way requires that the shifter be placed in park to remove the keys from the ignition. As
a result, it is possible to use the key-in-ignition sense switch to prevent remote starting if the keys are in the
ignition. The diagrams in this section illustrate how to accomplish this.
Diagram A applies to all General Motors vehicles at the time of publication of this guide. Diagram B applies to
all pre-1996 Dodge Dakota pickup trucks with 2.5 liter motors. This solution has one side effect - if the customer
inserts the key in the ignition with the driver's door open, the remote start system will shut down. If this inter-
face is used it is important to inform the customer to close the driver’s door before inserting the key into the
ignition when the remote start is active. This will allow the customer to turn the key on and shut the remote
start down by pressing the brake without the key sense wire shutting down the unit prematurely.
In addition, you must connect a tan (+) shut-down input to the yellow wire on the relay satellite ribbon cable.
This prevents the remote start system from activating if the key is left in the "run" position. If your remote start
system only has one tan input, you must use diodes to isolate the ignition circuit from the brake switch input.
However, due to future manufacturer changes in vehicles, it is possible that this may not apply to all vehicles.
In addition, color variations are possible from model to model; make sure to test the circuit carefully. Please call
DEI Technical Support if you need assistance in making this interface.
testing the neutral safety switch

18 © 2000 Directed Electronics, Inc. Vista, CA
IMPORTANT! Once the interface is complete, attempt to remote start the vehicle with the
door closed and the key in the ignition. The vehicle should not start. If it does, recheck the
connections.
Diagram A - General Motors trucks, sport utility vehicles and column shifting passenger vehicles:
Diagram B - Pre-1996 Dodge Dakota pickups with 2.5 liter motors:

© 2000 Directed Electronics, Inc. Vista, CA 19
1995 and newer vehicle anti-theft systems
(immobilizers)
1995 and newer vehicle anti-theft systems (immobilizers) require a bypass module. The bypass module allows for
easy interfacing, while still maintaining the OEM system’s integrity.
The Passlock I and Passlock II systems can be found in the following General Motors vehicles:
■‘95 and newer Cavalier and Sunfire
■‘96 and newer Achieva, Grand Am, and Skylark
■‘97 and newer Intrigue, Malibu, and Cutlass
■‘98 and newer trucks, vans, SUVs
■‘99 and newer Alero
■2000 and newer Impala and Saturn
Passlock I and II systems are VATS-evolved. Passlock systems still rely on the R-code to start, but the pellet is
no longer placed in the key. The resistor can now be found in the key switch. This allows for a greater number
of possible R-codes. In addition, Passlock systems require “seeing” the correct R-code at the correct time. To
bypass Passlock I and II, p/n 555L or p/n 555T is required.
The Passkey III system can be found in the following vehicles:
■‘97 and newer Park Avenue
■‘98 and newer Cadillac
■‘99 and newer U vans, Transport, Montana, and Silhouette
■2000 and newer Grand Prix, Lesabre, Monte Carlo, Lumina, Bonneville
■2001 and newer Aurora, Aztek and Rendezvous
Other transponder-based systems include: Acura, BMW, Dodge/Chrysler/Jeep, Ford, Honda, Infinity, Mazda,
Mercedes, Mitsubishi, Nissan, Toyota, Volkswagon, and Volvo.
PK-3 and the transponder-based systems use a transponder system that locks out the ignition and fuel system.
This transponder system is comprised of two parts. The first part, the transceiver, circles the key switch
and is activated when the key is placed in the key switch or turned to the run position. Upon activation, the
transceiver will excite the transponder, which is located (but not visible) in the head of the ignition key. The key
passkey III (PK-3), transponder-based systems
passlock I and passlock II (PL-1 and PL-2)

20 © 2000 Directed Electronics, Inc. Vista, CA
transponder will then send a unique code back to the transceiver for evaluation. If the code matches a
valid code of the system, the vehicle will be allowed to start. Most of these transponder-based systems can be
bypassed using p/n 555U. Some may require additional parts from the vehicle manufacturer. Consult you dealer
for the applications. For most Ford PATS transponders, as well as Lexus and Toyotas, p/n 555F can be used, except
for the following vehicles, which will require p/n 555U: ‘97 and newer Mark VII, and 2000 and newer
Taurus/Sable, Contour/Mystique and Focus.
bypassing GM vehicle anti-theft systems (VATS)
Vehicles with the GM VATS (Pass Key) systems have a resistor embedded in the ignition key. If the VATS decoder
module does not measure the proper resistance when the vehicle is started, the starter and fuel pump may be dis-
abled for up to ten minutes. An optional "VATS pack" of resistors is available (p/n 652T). One of the resistors in the
pack will match the resistor in the key.
The VATS wires will be two very light-gauge wires coming out of the steering column. The colors of the wires vary,
but they are often contained in orange tubing - either both will be white wires, or one wire will be purple/white
and the other white/black. Determine the value of the resistor in the key. Then follow the diagram below to
bypass VATS during remote start operation. If the BLUE status output has been programmed for factory security
re-arm, use the H2/2 BLUE/BLACK third ignition output to control the relay.
NOTE: When connecting to the VATS wires, it is not important which wire is cut.