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21 Light Blue Wire: Ground Output While Running (-) 300mA
This wire provides a 300mA ground output that becomes active 3 seconds before the Remote Start Unit
initializes and remains grounded while running plus an additional 4 seconds after the Remote Start Unit
turns off. In all of the applications described below, a relay will be required.
The Light Blue wire can be used to accommodate the following situations:
A. Sensor By Pass:
If there is a Non Plug in Sensor used with the alarm system and it is not shunted during the Remote Start
activation period, then vibration or noise from the running vehicle can cause the alarm to trigger. In this
case, connect the Light Blue Wire to terminal #86 of a external relay. Connect terminal # 85 of the relay
to a fused + 12 volt battery source. Cut the sensor's trigger wire and connect one end of the cut wire to
terminal #30 and the other end of the cut wire to terminal #87a. Just before the Remote Start unit is
activated, the relay contacts will open, preventing the sensor's operation until the Remote Start unit shuts
off.
B. Additional Ignition Output:
Some vehicle's may require more than three ignition outputs to start and keep the vehicle's engine
running. If this is the case, connect the Light Blue wire to terminal #86 of an external relay. Connect
terminal # 85 to a fused + 12 volt source. Dependent on the vehicle's requirement, connect terminal #30,
to a fused + 12 volt source, or to ground, and connect terminal 87 to the vehicle to supply the additional
ignition source.
C. GM VATS Key Override:
If the vehicle has the General Motors VATS system installed, you will need to bypass 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 from the resistor pack supplied.
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.
NOTE: These wires are typically White w/ Black trace and Violet w/ Yellow trace, however in later model
Cadillacs, they are run through an orange sleeve, and are either both Black, both Yellow, or both White
wires. Consult the factory service manual for additional information.
3. Connect the Light Blue Wire from the Remote Start Unit to terminal #86 of an external relay. Connect
terminal #85 of the relay to a fused + 12 volt battery source.
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 selected resistor from terminal #87 to the second (#2) wire (as shown).
NOTE: The above information and following diagram is for the GM VATS system only.
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