Trailer Ground Wire Color. Brown wire: Tail light and marker light. Trailer wiring is very important to towing safety.
I am going to sand and scotchbrite the inside of the coupler and see if. Ground neutral and hot wires explained. Wiring for AC and DC power distribution branch circuits are color coded for identification of individual wires.
This is a fairly simple setup, no Here is the brand new generic wiring harness.
Old wiring appears to be brown and white to one side and green and yellow to the other. there was a spliced white ground wire connection at the trailer tongue.
I briefly flipped through the upfitter pdf, but can't find what I am looking for without. After checking grounds and bulbs and wiring on the trailer, I pulled my vehicle up and hooked into the system. The metal-to-metal contact in the hitch is not.