Wiring Diagram For 4 Pin Trailer Hookup. The white wire is your ground wire, which must be cut short and attached to the front of your trailer frame with a screw to power your lights. Not sure which wires attach to what on your trailer connectors?
Referring to a wiring diagram for a trailer comes in handy during installation. If you're towing just for the day and don't ever plan to tow again, you can pick up Larger trailers sometimes use a separate circuit for running lights on the sides and front of the trailer. Does one of your turn signals not work and you're not sure Various styles of connectors are available with four to seven pins to allow transfer of power for the lighting as well as auxiliary functions such as electric.
This accounts for three of the colors in the wiring harness.
The first step in wiring your trailer cables is to ground the white cable first.
Two wires should show some resistance between them and the first wire picked, while the other three will show no connection at all. But wiring a trailer may not be easy. The white wire is your ground wire, which must be cut short and attached to the front of your trailer frame with a screw to power your lights.
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