Troubleshooting Horse Trailer Interior Lighting That All Stopped Working During Wiring Repair
Updated 09/02/2019 | Published 08/31/2019
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Question:
Horse trailer Interior lights working working but when fixing a bad wire to one of the lights inside the trailer now light won’t come on. Is there more than 1 fuses should be changing since the horse trailer has two separate Compartments
asked by: Melissa G
Expert Reply:
Sounds like you might have shorted out the 12 volt accessory circuit of the trailer wiring on you 2011 GMC Sierra 2500HD in the process of repairing the wiring since that is the circuit that powers trailer interior lighting. You can verify this by testing the 1:00 pin of the 7-way on your truck with a circuit tester like part # PTW2993. There should be power on this pin all the time. If not, check the fuses under the hood of the truck.
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