Omega RS-3A Product guide

OPERATING & INSTALLATION INSTRUC-
TIONS
COPYRIGHT: OMEGA RESEARCH & DEVELOPMENT 2000
RS-3A
DELUXE REMOTE STARTER UNIT FOR
AUTOMATIC TRANSMISSION VEHICLES ONLY

2
Contents
Operation Guide
Introduction & Safety Considerations ........................................................................... 3
Remote Starting......................................................................................................... 4-5
Valet Mode.................................................................................................................... 5
Installation Cautions and Warnings .............................................................................. 6
Installation Instructions
Installation Considerations ........................................................................................... 7
Wiring Diagram Overview...................................................................................... 14-15
5 Wire Connector.......................................................................................................... 8
9 Wire Connector......................................................................................10-13 & 16-21
3 Wire Connector................................................................................................... 22-23
Valet Switch ................................................................................................................ 24
Programmable Features........................................................................................ 24-27
Limited Lifetime Warranty.............................................................................Back Cover

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Congratulations on your purchase of the RS-3A Remote Starter add-on unit.
The RS-3Aoffers you the convenience of starting of your vehicle’s engine, with
the press of a button from the comfort of your home or ofce, allowing your
vehicle to warm up in winter and cool down in summer.
The RS-3A is an “add-on” unit designed to be used in conjunction with an
additional remote control vehicle accessory such as a security alarm or keyless
entry system.
We highly recommend that this system be professionally installed, as the
complexity of the modern automobile and the nature of circuits to be accessed
is often beyond the abilities of most do-it-yourselfers.
There are several important safety considerations with using and installing
the RS-3A remote starter unit. Among them are:
-This unit is for vehicle with an automatic transmission only. Installation in a
vehicle equipped with a manual transmission can result in property damage
or personal injury.
-This unit is for fuel injected gasoline or diesel engines.
-Children should not be left unattended in, or be allowed to play with the acti-
vat-
ing transmitters of any remote starter equipped vehicle.
Introduction & Safety Considerations

Remote Starting
*
To Remote Start The Vehicle: Press the necessary button or button com-
bination on the host system’s transmitter.
1) The parking lights will turn on to conrm the starting process.
2) The ignition circuit will turn on.
3) Within a few seconds the parking lights will turn off and the starter will en-
gage.
4) The engine will start, run, and the starter will be disengaged.
5) The parking lights will turn back on while the RS unit is controlling the en-
gine.
6) If the engine stalls, the RS unit will make two attempts to restart it.
When you leave your vehicle, simply set the climate controls for what you
desire to be operating upon remote start - heater, defroster or air conditioning.
Upon entering the vehicle place the ignition key in the switch and turn it to the
“On” position. Do not turn the key to the “Start” position.
Deactivation
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-Stepping on the brake pedal will turn the engine off.
-Opening the hood will turn the engine off. If the hood is open when an ac-
tivation attempt is made, the RS unit will not respond, and will not start
the engine.
-Turning “on” the Valet Switch will also stop the engine.
Valet Mode
The RS unit may be placed into a “valet mode” which prevents the remote
start feature from being activated. Valet Mode should always be used when you
do not wish for remote start to be operated, such as when you leave your vehicle
with a valet parking attendant, mechanic or if you loan it to another person. An
“on/off toggle” switch, the Valet Switch, is used for this, and it is typically mounted
within easy reach of the driver. To engage the Valet Mode:
- At any time simply ip the Valet Switch to the “on” position. Three seconds
later the parking lights will ash 3 times to indicate Valet Mode.
Once the RS unit is in Valet Mode, an attempt to remote start will instead be
acknowledged by 3 parking light ashes, but no starting attempt.
- To turn off Valet Mode, with the ignition switch “On” simply ip the Valet
Switch
Switch “off”; the parking lights will ash once. If the Valet Switch is turned “off”
5

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Do not attempt to install this Remote Car Starter into a manual
transmission vehicle! Doing so could cause serious property
damage, personal injury, and will void all warranties!
Be aware of, and avoid, any airbag circuitry! Due to the fact that
an installer will not be in a normal, upright seated position, severe
injury may occur in an accidental airbag deployment!
The use of a Digital Multimeter (DMM) or Volt-Ohm Meter (VOM)
instead of a standard testlight is required. This can greatly reduce
the risk of an accidental airbag deployment or on-board computer
damage.
Battery gases are explosive! Avoid sparks and do not smoke
while working near the vehicle’s battery!
Always protect wires routed through the rewall from sharp metal
edges and hot parts of the engine! Always fuse positive wires at
their source!
Installation Cautions and Warnings

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IMPORTANT!
After reading this manual, start the installation by afxing the
WARNING DECAL to a visible area in the engine compartment!
Installation Considerations: This entire booklet should be read before
starting the installation. An understanding of which control module wires are to
be used and their functions is essential. Installations will vary from car to car,
as some control module wires are required, while others are optional. Before
starting the installation, it should be determined which control module wires will
be used. Most installers will list these wires, then “map out” the installation by
locating and noting the target wires in the vehicle. This will also determine the
best location for the RS control module, which is mounted upon completion of
the installation.
This Remote Start Unit duplicates the actions that occur within the ignition
switch when you use your key to start the engine. Because of this, most of the
main wiring harness connections will be made at the ignition switch harness.
The ignition switch wires usually are high amperage circuits, which means that
high reliability connections must be made- soldering of all connections is recom-
mended.
Caution! Avoid the Airbag circuit! Especially avoid any harness or wires encased
Installation Instructions

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(Two 12-Gauge) Red Wires: Constant +12
Volts Input
Connection Required. Connect both Red wires to constant 12 Volts. The
source used must supply adequate amperage. The most common sources are
the battery’s Positive terminal and the ignition switch wiring harness. Good reliable
some Ignition Switches have the electrical
switch as part of the mechanical switch;
oth- ers have the electrical switch
lower on the steering column
and connected to the mechanical
switch by a linkage. The ignition
switch wiring harness is the
best source for this and the
ignition #1 and accessory
W I R I N G - 5 Wire Connector
Two Typical “Electrical”
Ignition Switch Locations
OR

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12-Gauge Green Wire: Starter Output Con-
nection Required. Connect the Green wire to the vehicle’s Starter wire. This
wire will show +12 Volts only when the ignition key is in the “Start” position. This
wire is also found in the ignition switch wiring harness (see diagram on previous
page). Some vehicles have a second Starter wire known as a “Cold Start” wire.
When this is encountered, an optional relay may be needed, congured to the
3-pin Red port, to energize the second Starter wire (pages 22-23).
Note: If a security system is present which utilizes a starter interrupt circuit, the
Green wire must be connected to the Starter Motor side of the interrupt.
12-Gauge Blue Wire: Ignition Output Con-
nection Required. Connect the Blue wire to the vehicle’s Ignition wire (also
known as “Primary Ignition”). This wire will show +12 Volts when the ignition key
is in the “Run” and “Start” positions and no voltage in the “Off” and “Accessory”
positions. This wire is found in the ignition switch wiring harness (see diagram
on previous page).
Note: If two or more Primary Ignition wires are present, you will need to connect
an optional relay or relays to the 3-pin Red port (see pages 22-23).

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12-Gauge Yellow Wire: Accessory Output
Connection Required. Connect the Yellow wire to the vehicle’s Accessory
wire. This circuit supplies power to the Heat, Ventilation and Air Conditioning
(HVAC) system. This wire will show 12 Volts when the ignition key is in the “Run”
and “Accessory” positions and No voltage in the “Start” and “Off” positions. The
connection point for this wire is also found in the ignition switch wiring harness
(see diagram on page 8).
W I R I N G - 9 Wire Connector
22-Gauge Black Wire: System Ground
Connection Required. Connect the Black wire to a very good, clean
chassis ground. A recommended connection is to an existing machine-thread
bolt, either in the driver’s kick panel, steering column area or a major structural
member behind the dash. Small dash braces are not adequate, and the area
must be clean, bright metal. Use of a sheet metal screw or otherwise grounding
to the vehicle’s sheet metal is least desirable, and in some cases will result in an
inadequate grounding of the system.

22-Gauge Yellow/Black Wire: (+) Brake Input
Connection Required- The Yellow/Black wire must be connected. It
is part a critical safety feature which disables the RS unit whenever the brake
pedal is pressed. Connect the Yellow/Black wire to the brake switch wire which
shows +12 Volts when the brake pedal is pressed. The brake switch is typically
located above the brake pedal, and usually mounted to the brake pedal support
bracket. Always make this connection in a fashion ensuring its long-term reliabil-
ity; soldering is highly recommended. Upon completing the Yellow/Black wire’s
connection, thoroughly test the operation of this circuit.
22-Gauge Dark Blue Wire: (-)
Hood Input
Connection Required- The Hood Safety Switch must be installed and
the Dark Blue wire must be connected. This prevents operation of the RS
unit if the hood is open.
Carefully install the included pin switch so that it is open (pin down) when the
hood is shut and closed (pin up) when the hood is open. Connect the Dark Blue
wire to the pin switch and carefully route this wire through the rewall, using an
added or existing grommet, avoiding any hot or moving parts.
If there is an existing hood pin switch for an alarm system, you may use it for
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Instead of using a pin switch to monitor the hood’s open or shut status, an
Omega
AU-46 Mercury Tilt Switch may used. Connect one of the AU-46’s wires to Nega-
22-Gauge Orange/Black Wire: Engine Detect Input
Connection Required. The Orange/Black wire is the engine detect wire.
The RS unit utilizes two different methods of monitoring the vehicle during the
remote starting process. Consider both methods before deciding which one to
use. Normally the Smart Start method is used, especially for diesel engine ap-
plications in which the vehicle has no true tach signal available. An adjustment
control and LED indicator for each method are on the side of the unit’s case.
Hood
Pin
Switch
To Existing Alarm Dark Blue Wire
Optional Parts Needed:
Two IN4002 Diodes
Diode Isolating
The Hood Switch
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1) Smart Start:
This method uses a voltage sensing circuit which reads the vehicle’s voltage
before attempting to start, and then monitors for a voltage increase which occurs
when the alternator has output. The Orange/Black wire connects to a constant
12 Volt source; the recommended location is the vehicle’s battery. Once all of
the wiring connections are made, the Smart Start voltage sensing input must be
adjusted, and Programmable Feature #5 offers two levels of the starter motor
preset cranking times. To make the initial Smart Start adjustment:
1) Position the selector switch for Smart Start (right position).
2) Locate the Smart Start adjustment and LED indicator on the side of the
unit.
Ensure that both adjustment screws are completely counterclockwise.
3) Now start the engine with the key; then, turn the Smart Start adjustment
screw slowly clockwise until the LED indicator begins to ash. The ashes
conrm that the unit is sensing the engine.
4) Turn the engine off.

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Red & Red:
(+) 12 Volts
Parking Lights
Starter
Light
Switch
White:
To Starter
Red: To
Ignition
Switch
Relay
Switch
Ignition
OPTIONAL
AU-SOCKET &
SPDT RELAY FOR
ANTI-GRIND FEATURE
White: (+) Parking
Light Output
Hood Pin
Switch
Yellow/Black:
Brake (+)
Green:
Starter (+)
Yellow:
Accessory (+)
Blue:
Ignition (+)
Orange: (-) Output When
Activated
30 Amp
Blue:
(-) Hood Switch
Battery
+
30 Amp
Green:
To Glow Plug or
“Wait To Start” light
Pink: To
Alarm or Key-
less Entry

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Yellow/Black:
Brake (+)
Green:
To Glow Plug or
“Wait To Start” light
Pink: To
Alarm or Key-
less Entry
ORANGE = ANTI-GRIND OUTPUT -
ORG/BLK = ENGINE DETECT INPUT
PINK = START ACTIVATION INPUT -
YEL/BLK = BRAKE INPUT +
DK. BLUE = HOOD INPUT -
GREEN = GLOW PLUG INPUT +
WHITE = PARKING LIGHT OUTPUT +
BLACK = GROUND
LT. BLUE = IGNITION CONTROL OUTPUT +
BLUE = IGNITION + OUTPUT
RED = +12V INPUT
RED = +12V INPUT
YELLOW = ACCESSORY + OUTPUT
GREEN = STARTER + OUTPUT
WIRING DIAGRAM OVERVIEW
Black:
(-) Ground
SMART START
TACH WIRE
Tach
LED
Tach
Adjust
Smart
Start
LED
Smart
Start
Adjust
Valet Switch
Lt. Blue:
To OEM Disarm
Orange/Black:
To Coil or Battery
Set Select Switch Position First
VALET
SWITCH
PORT
SATELLITE RELAY PORT
SELECT SWITCH
10 Amp

a. Without starting the engine, turn the ignition key to the “On” position.
b. If the LED indicator remains off the unit has been properly tuned.
c. If the LED indicator ashes there is noise on the Orange/Black wire’s con-
nec-
tion and it will be necessary to relocate the connection.
2) Tach Sense:
If the vehicle is generally hard to start (example: requiring the starter to be engaged
for more than 1 second) this method will produce more consistent remote starting.
With this method the Orange/Black wire reads the engine speed (tach) informa-
tion from a wire in the vehicle. The Orange/Black wire connects to the vehicle’s
tach wire, which is found in the engine compartment, although in some cases it
may also be located inside the vehicle. To use a multimeter to verify the correct
tach wire, set it for AC Volts scale. The correct wire will read 1 to 6 volts AC with
the engine idling, and will increase with engine speed. An additional adjustment
control and LED indicator allows tuning the unit’s tach wire sensitivity.
1) Position the selector switch for Tach Sense (left position).
2) Locate the Tach Sense adjustment and LED indicator on the side of the
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3) Start the engine with the key; then turn the Tach Sense adjustment screw
slowly clockwise until the LED indicator illuminates solid.
- To increase sensitivity, thus the crank time, turn the adjustment screw
coun-
terclockwise.
- To decrease sensitivity, thus the crank time, turn the adjustment screw
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22-Gauge White Wire: Parking Light Output
Connection Recommended. The White wire is a +12 Volt output to the
vehicle’s exterior parking lights and its function is to visually conrm remote start
and Valet Mode operations. The parking lights are also used as indicators when
programming features. Connect the White wire to the vehicle’s 12 Volt parking
light circuit as shown in the accompanying diagrams. The correct wire will show
12 Volts only when the headlight switch is in the “Parking Light” and “Head Light”
positions. This wire can usually be found at the headlight switch, and various
other locations within the vehicle, such as the rear body harness or rewall
connector. Caution: When such a wire is located, be sure to also test that it is
non-rheostated: While metering the wire, operate the dash light dimmer control.
The correct wire will show no change in voltage when the dimmer is operated.
Some vehicles have a parking-light relay which is triggered by a Negative signal
from the headlight switch. In these vehicles, the White wire must be connected
after the relay, usually at the Fuse/Junction Block. Do NOT connect the White

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directly to the vehicle’s headlights. An external relay is required. Vehicles having
a split parking light system must
be diode isolated, requiring the
use of two IN4006 diodes:
Dash Board
Lights Control
Module
Parking Lights
Light
Switch
White Wire
Typical Parking Lights Connection
Right Side Circuit
White Wire
Light
Switch
Left Side Circuit
Parking Lights
Diode Isolation Of Split
Parking Light Systems
Two IN4006 Diodes.
Control
Module

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22-Gauge Pink Wire: (-) Start Activation
Input
Connection Required. The Pink wire is how the RS-3A is activated for
remote start operation. This wire is to be connected to an alternative device such
as an existing keyless entry or alarm system. If the Pink wire receives a Negative
pulse, the RS unit will start the vehicle’s engine, provided that all safety circuits
are in the proper status. After the engine has been started by remote control,
another Negative pulse on the Pink wire will turn the RS unit off, stopping the
engine. Connect the Pink wire to an available auxiliary output of the existing
host system, or if there is no available auxiliary output, the “2 Pulse Activation”
programmable feature may be used to activate the remote start operation. This
feature is typically used with an existing keyless entry system.
Should it be desired to activate the RS unit’s remote start operation from an
existing keyless entry system, programmable feature #6 will congure the Pink
wire to activate the remote start feature only if it receives two Negative pulses
within 10 seconds. This allows conguring the RS unit to remote start when the
OEM transmitter’s “LOCK” button is pressed twice. In most cases the existing
keyless entry system will have Negative switching door lock circuits to which
the Pink wire may be connected directly. In the other cases, an optional relay
is needed to reverse Positive polarity to Negative. When feature #6 is selected
for “two pulse” operation, once the RS unit has started the engine, the Pink wire

Ignition Switch
87a 30
87
85
86
Coil
Connect “Switch” side of cut wire
to terminal #30 of the relay.
Control
Module
Starter Motor
Orange Wire
Connect “Motor” side of cut wire
to terminal #87a of the relay.
Note: Connect 12-gauge
Green starter wire to the
motor side of the cut wire
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22-Gauge Orange Wire: Anti-Grind Output
Connection If Desired. The function of the Orange wire is to provide a
250mA Negative auxiliary output which may be used to operate a starter motor
“Anti-Grind” relay, which prevents accidental starter grind should the key be turned
while the remote starter is in operation.