marpelExplorerMay 29, 2022Trailer BrakesAs per another thread, I have yet to change out the 7 pin cable. Prior to doing so, I decided to confirm whether the old cable is still usable. I hooked up the 7 pin to the truck (which recogniz...Show More
Sjm9911ExplorerJun 08, 2022Disconect the feed wire fron the brakes, put a meter on it and test it for voltage. Only way to know for sure.
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