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Installation Guide P. 9
Problem: Some vehicle circuits need to be isolated from feedback. In some cases, when a vehicle
is remote started, feedback occurs on a circuit and powers another device or switch that was not
intended to be powered during the remote starts.
The following example will be a Positive (+) Parking Light circuit that feeds back and activates the
windshield wipers during remote starts.
Solution: When power is applied to the OEM Parking light wire, it back feeds through the parking
light switch and activates the wipers. Where the connection was made from the start modules'
Parking light output and the vehicle's parking light circuit, the OEM parking light wire is cut to
isolate the parking light switch and the actual parking lights. A Relay is added to the parking light
circuit so that power from the remote start module is only sent to the parking lights and not the
parking light switch.
The relay connections:
85: Connects to the +12 Volt Parking light output from the remote start module. This becomes the
positive side of the coil.
86: Connects to a Negative source, i.e. the spot where the remote start module is grounded. This
becomes the negative side of the coil.
87: Connects to the +12 Volt Parking light output from the remote start module. This becomes the
power supply for the vehicle's parking lights. The OEM parking light wire is cut. The side that is still
connected to the switch becomes the “Switch Side”. The side that is still connected to the Parking
lights becomes “Parking Lights Side”.
87A: Connects to the “Switch Side” of the cut OEM parking light wire.
30: Connects to the “Parking Light Side” of the cut OEM parking light wire.
Comments: When the relay is at rest, the OEM Parking light wire is connected (through 87A & 30)
and allowed to operate normally. When the remote start module powers the Parking lights, the
OEM parking light wire is opened, and power from the remote start module is sent only to the
actual Parking Lights (from 87 through 30).
Inversion:
Example: Activating a Positive Trunk release switch
Problem: The vehicle's power trunk release switch is activated by a positive (+) pulse, and the
remote start module's Trunk output is negative (-).
Solution: A relay is used to invert the negative signal from the start module to a positive signal
before it is sent to the OEM switch.
The relay connections:
85: Connects to the start module's Trunk release output wire. This becomes the negative side of
the coil.
86: Connects to a fused +12 Volts source. This becomes the positive side of the coil.
87: Connects to a fused +12 Volts source. This becomes the supply for the positive trunk release.
87A: No connection. This terminal is not used in this application.
30: Connects to the OEM trunk wire in the vehicle.
Comments: At rest, the trunk switch is allowed to operate normally. When the Trunk button on the
remote is pressed, the negative Trunk output from the remote start module triggers the relay. When