Trailer Light Wiring Diagram Truck. This color trailer wiring diagram will help you when you need to connect your trailer to your truck's wiring harness or repair a wire that isn't working. Not all trailers have reverse lights, so consider.
Desperate Times, Desperate Measures Trailer wiring may be easy. For cars, the assembly is likely located inside the trunk. To do so, you will need to check the connector and wiring from the vehicle to the trailer.
Check the wire harness for cuts, fraying or other damage.
Lights and Signals Before each tow, check the trailer taillights, stoplights, turn signals and any clearance lights for proper operation.
The wiring diagram for the dome light of this car can be found in its maintenance manual. You can get an adapter plug for most Ford and GM trucks that just plugs in to the tail light wiring. This page has wire diagrams for many electric options including wires for trailer lights, brakes, alt power and connectors.