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Discussion Starter · #1 ·
Hi there, does anybody know if there is a certain trailer adapter that I need to buy for my 07 Silverado? For some reason, when I plug my trailers in, the running lights do not work on the trailers. I have signals, brake lights, etc. but no running lights.

I know they work on the trailers because I tested it with my other vehicle. I am currently using one of these aftermarket adapters (5 wire harness to the circular adapter).

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