4 Wire Trailer Connector Diagram. Diagram 7 pin semi wiring full plug trailer flatbed way aj s truck center conf with connector break away diagrams replacing the 7pin wire lights a. However it has three additional conductors for a 12 volt hot lead electric brakes and reverse lights.
If not the structure will not work as it ought to be. Simply plug the trailer end connector into the vehicle end connector and youre ready to roll. 4 wire trailer plug wiring diagram.
It shows the components of the circuit as simplified shapes and the gift and signal links amongst the devices.
Use this 4 pin trailer wiring diagram to properly wire your 4 wire trailer plug. Socket and plug are keyed. Just keep in mind that wiring is a custom component. You must check the trailer manual to see if the wiring is correct but normally the white wire is called the ground wire while the brown wire is used for tail lights.