7 Pin Trailer Wiring Diagram With Brakes Dodge. By continuing to use this site, you are agreeing to our use of. My GMC's always came factory hot.
Refer to your trailer service manual and plug installation instructions to avoid wiring problems that may damage your trailer, brake controller or. There is not a pin on the truck that gets hot with brakes applied. The only wiring diagram I have (in my Haynes service manual) doesn't seem to show trailer wiring.
I would assume this goes to the trailers brakes.
That diagram is very clear on that.
Regardless of wire color, the pin position for function is pretty standard. Anyone have a diagram of which pins supply which functions? Not sure which wires attach to what on your trailer connectors?