I bought the Basscat lucent side lights for trailer.Temporarily hooked them into the front marker light on trailer fender.Everything worked great.After installed,I can’t get them or the marker lights to work or the running lights.Turn signal and breaks and backup all still work.Any suggestions?
Since you still have turn, brake and backup lights, the ground is good. The problem sounds like it is between the tow vehicle and trailer. Check the plug on the truck with a meter or test light and go from there. Check all fuses?
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