Recommended 4 Pole Wiring Harness for a 2005 Chevrolet Silverado 1500
Updated 02/03/2026 | Published 07/07/2024
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Question:
I have a 05 Silverado 1500 with faulty factory wiring to towing harness. My regular tail lights, brake lights and brake lights all work on factory wiring. Do you have a T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector without factory trailer connector option for my truck? I am able to use factory juntions under the bed for tail, brake backup lights.
asked by: Steve
Expert Reply:
Steve, we do have a T-one harness for your Silverado # 118384 but it's only going to work with the factory 7-way. From what I can see there is no plug and play option for your Silverado, so realistically your only option would be to use a universal harness # C47NR.
You're also going to need the Curt 2 to 3 Wire Light Converter # C56196 to convert your 2 wire system to a 3 wire.
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Chris R.
2/3/2026
Hey Steve, how did things go with the Curt universal harness and the 2-to-3 wire converter on your Silverado? It’d be great to hear if that setup solved the wiring issue. Your update could make it easier for others dealing with the same problem.