How To Wire Reverse Lights To Trailer Plug. The relay in turn will connect I have two hard wired into the trucks reverse lights, it didn't make sense in my head that the trailer plug wasn't In your PM you asked how to trigger the V-box spreader light via the park light circut. Video tutorial on how to wire trailer lights.
Once you confirm the tow vehicle's plug has the proper ground and voltage, you can go on to check the trailer wiring harness and bulbs for problems. I need help finding a diagram or pictures even of how the wiring harness goes to the trailer wiring plug and reverse lights. By law, trailer lighting must be connected into the tow vehicle's wiring system to provide trailer running lights, turn signals and brake lights.
In this case, the brown wire is used for the tail lights, the license plate light, and the side.
What is the brown wire on trailer lights?
A colour coded trailer plug wiring guide to help you require your plugs and sockets. How can you wire your trailer to your tow vehicle to ensure towing safety on your journey to your recreational destination? Trailer lights inform other drivers of your intention, but if they aren't working, your trailer wiring harness may have a problem.