Adding In Bed 7-Way Trailer Connector on 2003 GMC 2500HD

Updated 05/11/2021 | Published 05/08/2021

Question:

Just got around. I ordered part # C56070 for my 2003 gmc 2500hd. This part wont work. I have no plugs on the harness coming back to my current plug. The current plug has two small Phillips screws that hold the socket in. What do i need?

asked by: Max V

Expert Reply:

The factory connection that the the Curt 5th Wheel/Gooseneck Custom Wiring Harness # C56070 should be on the harness that is plugged into your 7-way. This connection may still be clipped to the crossmember on the rear of the truck just behind the spare tire mount. You may need to remove the spare tire to get to this connection.

If the factory connector was cut off the harness to install the 7-way you currently have, you will need to splice into the factory wiring with the bare wires on the wire harness by removing the OE connectors.

expert reply by: Bud M