7 Way To 4 Way Trailer Wiring Diagram. The original wiring on my boat trailer was damaged and installed incorrectly by the previous owner. One way to check for faulty wires is to use a circuit tester.
In this video we go over how easy and fast it is. One way to check for faulty wires is to use a circuit tester. Your trailer wiring plug doesn't match the one on your vehicle.
The thing is I have to go to the tail lights to make attachments.
In this video we go over how easy and fast it is.
I double checked the wiring in my truck vs. the wiring diagram and it was the same. The trailer wiring diagrams listed below, should help identify any wiring issues you may have with your trailer. Your trailer wiring plug doesn't match the one on your vehicle.