Ram 1500 Brake Wiring

Brake Lights stopped working.
Found white/tan wire that runs from brake switch to rear of truck broke and hanging near the rear tire. I can't figure out where it goes but appears to be power supply for brake lights. Wire becomes hot when brake pedal is pushed.
Any ideas? Can find wiring diahgram.
thanks
Jay

If the wires are broken, find out where they broke from and reattach them. The colors should match up. My guess of where the wires go is right up near the frame and under/into the back of the bed.