Truck lights work trailer don't

Asked by Mar 16, 2017 at 02:08 AM

Question type: Maintenance & Repair

Have a 99 ford 350 all of my lights on truck work
but when I hook.up to my trailer nothing works on
the trailer. Have changed the wire harness and
connection plug. Any fuse suggestions

3 Answers


With lights on have you checked with voltmeter to insure there is power to the plug?



Sounds like your missing a ground. Make sure power and ground wires are hooked up correctly to the trailers wiring.

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