P. 28
Installation
Guide
CT-3400 TW
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
the relay is activated, +12 volts from 87 is sent through 30, and the OEM trunk switch is activated,
by the positive pulse.
Interruption:
Example: Creating a Starter Kill relay to prevent unauthorized starting of the vehicle.
Problem: The OEM starter circuit needs to be disabled only when theft is attempted.
Solution: A relay is used to interrupt the OEM starter wire. There is an output on the remote start
module especially for this purpose (Starter Kill output).
The relay connections:
85: Connects to the Starter Kill output wire from the remote start module. This becomes the
negative trigger for the coil.
86: Connects to the vehicle's Ignition wire. This becomes the positive trigger for the coil.
87: No connection. This terminal is not used in this application.
The vehicle's OEM start wire is cut. The side of the wire that is still connected to the Ignition switch
becomes the “Key Side” of the starter wire. The side of the wire that is still connected to the starter
motor becomes the “Starter Side” of the of the starter wire.
87A: Connects to the “Key Side” of the cut OEM starter wire.
30: Connects to the “Starter Side” of the cut OEM start wire.
