Could Welding on Trailer Frame Damage Lighting Circuits


Is it possible welding this on fried the brand new LED lights on the trailer? They worked before but not anymore. Not sure of the best/easiest way to test the lights.


Expert Reply:

If there was a short on the wiring of your trailer to the frame when you were welding it could potentially damage the wiring but normally it's not an issue. You can try running a jumper cable from a positive battery post to the power wire of the light and ground the light and you'll know if the light is the problem or the wiring. I suspect the wiring though. Most likely you didn't reattach the ground from the trailer wiring harness after swapping the coupler and that's why it's not working.

expert reply by:
Jameson C

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