#Trailer connector 4 pin how to

To fix this, connect 12V power wire directly to the vehicle battery. (Powered Converter Only) 12V power wire is not connected to vehicle battery.If none of the trailer lights work for any function, this may be due to several possible reasons: Use a circuit tester to check the wires and lights to be sure the ground is securely connected and you have power. If your light doesn’t have a separate ground wire then it is grounded through the mounting holes and you will have to be sure that the light is mounted directly to the trailer frame and making a good connection. If the lights have a separate ground wire to attach to the trailer frame it will need to be connected to a suitable point on the trailer frame. Start by tracing the wiring from your tail lights to ensure there are no crimped, damaged, or broken wires that are causing interference with the circuit.Īnother reason could be that you do not have the tail lights properly grounded. Four Wire Trailer Tail Lights Not Working

#Trailer connector 4 pin how to

In this guide, we will walk you through the trailer-wiring process for 4-way plugs and show you how to diagnose wiring problems as well as troubleshoot for issues with your 4-way trailer. And, you don’t necessarily have to be an electrician to manage. Trailer wiring, however, can seem complex for many people but it doesn’t have to be. There’s also an additional pin provided for a ground wire. This connection provides the required running lights, brake lights, and turn signals for the trailer. Boat trailers, utility trailers, and many standard light-duty trailers use a 4-way wiring harness to connect to the tow vehicle.