Asked by: Darnell Moheltravel camping
What do you do when your trailer lights don't work?
Last Updated: 7th June, 2020
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In this way, why do my LED trailer lights not work?
The first thing I recommend doing is to check that the ground wire for the lights are securely attached to a clean metal surface on the trailer frame. A loose ground wire will keep the lights from working. Next, you want to make sure the wiring on the trailer is wired correctly and wired by function, not just by color.
Also, why are my running lights not working? Trailer Running Lights Do Not Work but Brake Lights and Turn Signals Do Work. If the issue is not a fuse or relay then you can test the vehicle side trailer connector using a circuit tester such as # 40376. Turn the vehicle headlights on and use the circuit tester to test the pins on the connector at the back.
Herein, does trailer have to be on ball for lights to work?
In some cases trailer lighting will ground through the hitch ball but that's typically only if the actual ground circuit is insufficient. It needs to ground through the wiring of the trailer harness.
What is the color code for trailer wiring?
Trailer Wiring Colors Each connects to a different function: Brown wire to the tail or parking lights. Green wire to right turn signal/brake light. Yellow wire to the left turn signal/brake light.