Why are my lights not working on my trailer?

Many trailer problems are due to a poor grounding connection, which is usually the white wire coming out of the trailer plug. If the ground is poor, lights may work intermittently or not at all. Even if the wiring to the plug is adequate, make sure that the ground connections to the trailer frame are good.

Where is the fuse for the trailer running light?

For anyone else who has this problem, check fuse J14 in the fusebox under the hood. The fuse locations are printed on the underside of the fusebox lid. J14 is a 20 amp female maxi fuse that protects the trailer running light circuit. Mine was blown.

Why are the lights on my tow truck not working?

Check the fuse on the powered converter to ensure it is still functional. Take a look at the tow vehicle lighting fuses. Examine the wiring on the trailer side and vehicle side for in-line fuses. If the blown fuses continue, it might be the result of the circuit being overloaded. One solution is to replace the trailer lights with LEDs.

Why does my trailer running light keep blowing?

The trailer running light and interior illuminations should be two different circuit with separate fuse for each. its just the lights behind the radio/ac that goes out when the fuse blows. does anyone know where i might be able to get a wiring diagram for this truck at. Did you find the recommended reading relevant to this discussion?

Can a trailer light work except for one function?

Trailer lights work except for one function: brake, right turn, left turn, or tail. Harness wires are not connected to vehicle correctly/securely. ( Plug-In Only) A set of connectors is not seated together properly or is not making a good connection.

What’s the fuse for a trailer running light?

The trailer running light fuse according to your owners manual is F29 and is a 20 amp blue fuse. You will also want to check the trailer tow receptacle fuse F30 which is a 30 amp pink fuse. If these fuses are good, then I recommend checking each trailer wire pin at your bumper using a circuit tester like # PTW2993 to check for function.

How can I find out if my trailer lights are working?

Check your vehicle’s plug configuration. Hook up your trailer and connect the trailer light harness. Have a helper stand back to see if the running lights, stoplights and blinkers are working properly. If all the lights appear dim or you have no lights at all, check the trailer light harness at the tow vehicle.

Why are my running lights not working on my truck?

If all fuses and relays are good then the problem is somewhere between the trailer connector at the back of the truck and where it terminates at the front. You can use a circuit tester such as # 40376 to test the truck side trailer connector. If there is no power on the running light pin then check the back of the connector where the wires attach.

Why are the tail lights on my car not working?

If the wiring is all correct then you will need to check the trailer connector on the vehicle and trailer for a ground connection issue, or a short on the tail light circuit on the trailer. Open them up and make sure there is no white or green corrosion causing an issue inside the connectors.