Utility Trailer Light Wiring. Please see the Trailer Wiring Diagram and Connector Application Chart below. Find the trailer light wiring diagram below that corresponds to your existing configuration.
Many vehicles, particularly pickups and SUVs, come prewired for trailers. Before connecting each wire slide an appropriately sized piece of heat shrink over each wire. This is a short video series of the steps that I have taken to refurbish and old Utility Trailer that was designed and built by my father.
Before connecting each wire slide an appropriately sized piece of heat shrink over each wire.
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If you are rewiring your trailer completely, check out our trailer rewiring guide. Mount one light to either side of the trailer in the same location as the old lights, taking note of the requirement for the numberplate light. It's important that your trailer lights are in proper working condition so that other drivers will see you signal and brake.