Brake Controller Wiring Adapter Part # 3015-P for 2004 Chevy Silverado

Expert Reply:

If you have the OEM wiring harness that came with the truck, you do not need a wiring adapter like part # 3015-P. The OEM harness DOES NOT attach to the brake controller wires color for color. It would wire as follows: the red wire on the OEM harness connects to the black wire on the controller, the light blue wire on the harness connects to the red wire on the controller, the dark blue harness wire connects to the blue wire on the controller and the black wire on the harness attaches to the white wire on the controller. If your OEM harness has a brown or orange wire, it is NOT used. This wire is for an illumination circuit that is not needed. This wire should be bundled up out of the way.

If you do not have the OEM harness for the GMC, you will need the wiring adapter for that particular model year. When one of our aftermarket wiring adapters is used, it will wire up color for color with the Prodigy.

I will provide a link to an install video outlining how to complete your install on your 2004 Silverado. This video shows the install on a 2005 2500 series, but the procedure would be the same on your vehicle except for the wire color matching I explained earlier.

expert reply by: Mike L