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Wiring The 12 Pin Input / Output Harness, Connector (P/N 1124321)
The auxiliary 12 pin connector provides low current outputs to control various functions
in the vehicle during different stages of the Remote Start unit's operation. Understand-
ing these outputs and the time in which they occur will allow you to determine if they
are needed for the particular vehicle you are working on as well as how to use them.
1) Green/Orange: Tachometer Input Signal
This wire will continually monitor the engine's tach rate while the unit is under power of
the Remote Start module. Route this wire to the vehicle ECM tach input or through the
firewall into the engine compartment and connect to the negative side of the ignition
coil. This Remote start unit learns the tach rate of the vehicle and in most cases will
operate properly from one multi coil unit pack regardless of the number of cylinders. If
the vehicle has a single coil for each cylinder, it may be necessary to connect to one of
the vehicle's electronic fuel injector wires for proper RPM signal.
2) Empty Cavity, No Connection
3) Black/Blue: Pulsed Negative Output Before Start
The Blue/Black wire will provide a 1 second 250 mA pulsed negative output 1 second
before the remote start unit activates as well as when the transmitter is used to Unlock
the system. Typical use for this output would be to disarm a factory theft deterrent sys-
tem to prevent false triggering of the factory alarm when the remote start unit engages
or when the transmitter is used to unlock the doors.
NOTE: This output can be selected to operate like the door unlock output as set in alarm
feature setting #1 by selecting feature #17 of Bank 3 to "as feature1 Bank2".
4) Black/LT. Green: Pulsed Ground Output After Start
The Black/LT Green wire will provide a 1 second 250 mA pulsed ground output after the
vehicle is started under control of the remote start unit. Typically this wire will be used
to re-lock the vehicle doors if the doors unlock automatically when the factory anti-theft
system is disarmed.
5) LT. Blue Wire: Ground Output While Running Under Remote Start Control
This wire provides a 250mA ground output that becomes active 2 seconds before
the Remote Start module initializes and remains grounded while the module is active
plus an additional 1 seconds after the system turns off. In all of the applications de-
scribed below, a relay will be required.
The LT. Blue wire can be used to accommodate the following situations:
A. Shock Sensor By Pass:
B. Additional Ignition Output:
C. GM VATS Key Override:
6) DK. Blue Wire: (-) Trunk Release Output
The Dark Blue wire supplies a 250mA ground pulsed output whenever channel three
of the receiver is accessed. Pressing the pre-programmed transmitter button for three
seconds will access channel three. This is a low current output and must be connected
to a relay to supply power to the trunk release or the circuit you wish to control. Con-
nect the Dark Blue wire to terminal # 86 of a 30 amp automotive relay Connect terminal
# 85 of the relay to a fused + 12 volt source. Connect the common, normally open,
and normally closed contacts of the relay to perform the selected function of channel 3.
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