Directions 4 Prong Trailer Wiring Diagram. My FSM doesn't have any wiring diagrams. Wire the hot wire from the trailer pigtail to the positive side, and the ground the negative side.
I thaught the black was suppose to be the battery! I picked up a trailer that has typical brake/signal lights but it also has amber turn signals on it directly below the brake lights. Maybe you can follow the cable and see if you can find a breakout that leads to a ground.
I thaught the black was suppose to be the battery!
White: ground Brown: tail/running lights Green: right turn/brake Yellow: left turn/brake.
You need to install a four prong plug of the same configuration and wire it exactly as the. The white wire is the ground and is attached to the trailer frame near the front. A four-wire receptacle is more useful and versatile than three-wire, and you can install a matching plug on any piece of equipment.