Trailer Wiring Harness

Basic Trailer Wiring

The trailer wiring harness, with a seven-pin connector, is located at the rear of the vehicle and is tied to the vehicle's frame. The harness connector can be plugged into a seven-pin universal heavy-duty trailer connector available through your dealer.

The seven-wire harness contains the following trailer circuits:
• Yellow: Left Stop/Turn Signal
• Dark Green: Right Stop/Turn Signal
• Brown: Taillamps
• Black: Ground
• Light Green: Back-up Lamps
• Red/Black: Battery Feed
• Dark Blue: Trailer Brake*

*The fuse for this circuit is installed in the underhood electrical center, but the wires are not connected.

They should be connected by your dealer or a qualified service center.

If the back-up lamp circuit is not functional, contact your dealer.

If a remote (non-vehicle) battery is being charged, press the Tow/Haul mode switch located on the center console near the climate controls.

This will boost the vehicle system voltage and properly charge the battery. If the trailer is too light for Tow/Haul mode, turn on the headlamps (non-HID only) as a second way to boost the vehicle system and charge the battery.

    See also:

    Curve Tips
    ○ Take curves at a reasonable speed. ○ Reduce speed before entering a curve. ○ Maintain a reasonable steady speed through the curve ○ Wait until the vehicle is out of the cu ...

    Battery Replacement
    Replace the battery if the REPLACE BATTERY IN REMOTE KEY message displays in the DIC. Notice: When replacing the battery, do not touch any of the circuitry on the transmitter. Static from your body ...

    Playing from a USB
    A USB mass storage device or Microsoft Transfer Protocal (MTP) device can be connected to the USB port. The USB port is in the center console. The USB icon displays when the USB device is connecte ...