From what I've heard, some inspectors will make sure that the trailer ABS indicator lights up on the dash when the key cycles on if you're connected to a trailer. I would think there is a regulation against tampering with the ABS if they're going to require modern trailers to be equipped with them.
What is this trailer wire?
Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by Terlingua, Jul 14, 2022.
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