5 Pin Trailer Wire Harness Diagram. White pin to your ground. 5 way trailer side.
When you use your finger or perhaps stick to the circuit together with your eyes it is easy to mistrace the circuit. I emptied the recovery tank and refilled the trans with carquest premium tractor fluid. White wires for ground electricity.
5 pin trailer wiring is very similar to 4 pin wiring but it adds in a blue wire for the reverse or backup lights.
Yellow left turn brake on a 4 wire system green right turn brake on a 4 wire system blue or red brake lights only used on 5 wire systems warning. Choose a connector that has the required number of pins for the functions. As the name implies they use four wires to carry out the vital lighting functions. The red and blue wire can be used for brake control or auxiliary.