Compression Ignition Addict
Join Date: Jan 2008
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Trailer Reverse 12V signal
I've never noticed or maybe I still don't know exactly how this works. Most of the time I'm hauling horse trailers, or any other trailer that has electric brakes.
I bought a boat with hydraulic trailer brakes and when you put it in reverse, as far as I can tell the 12v backup lamp signal goes to the solenoid and prevents the hydraulic brakes from locking up.
Well, I don't have that 12V on my trailer plug at my bumper. Am I right about how that works? Is that fused? What else should I look at?
2008 F-250 CC SB
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