Trailer Wiring Harness

Heavy-Duty Trailer Wiring Package

The vehicle is equipped with the seven-wire trailer towing harness. This harness with a seven-pin universal heavy-duty trailer connector is attached to the rear bumper beam. It is located next to the integrated trailer hitch.

The seven-wire harness contains the following trailer circuits:

Yellow: Left Stop/Turn Signal

Dark Green: Right Stop/Turn Signal

Brown: Taillamps

White: Ground

Light Green: Back-up Lamps

Red w/ Black Stripe: Battery Feed*

Dark Blue: Trailer Brake*

*The fuses for these two circuits are installed in the underhood electrical center, but the circuits are

not connected. They should be installed by your dealer or a qualified service center.

If charging a remote (non-vehicle) battery, press the Tow/Haul mode button, if equipped, located at the end of the shift lever. This will boost the vehicle system voltage and properly charge the battery. If the trailer is too light for Tow/Haul mode, or the vehicle is not equipped with Tow/Haul, turn on the headlamps as a second way to boost the vehicle system and charge the battery.

5-51

Page 383
Image 383
Cadillac 2009 owner manual Trailer Wiring Harness, Heavy-Duty Trailer Wiring Package