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Extreme Veteran
Posts: 402
Location: Valentine, NE | Have an new '13 Ford. When hooked to our stock trailer, the lights work fine until you apply the brakes. Lights than go off until you let off the brakes--doesn't matter if you hit the factory brake controller or not. Brakes work fine.
Have run all the wires, hooked trailer to another vehicle, hooked the '13 to another trailer and they all work fine....Has to be in the plug is my thought but have lubed, spread prongs, removed, reattached wires, etc but no luck.
Driving me batty!!! Thoughts? | |
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Expert
Posts: 3853
   
Location: Vermont | BAD ground | |
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Expert
Posts: 3853
Location: Vermont | There's another possibility. Assume the trailer ground is completely open. With running lights only, there's a current path through the trailer running lamp, trailer stop lamp, truck stop lamp. With brakes only, there's a current path through trailer brake lamp, trailer running lamp, truck stop lamp. With both, there's no path back through the truck because everything is at 12 V.
Edited by PaulChristenson 2013-06-07 10:35 AM
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Strange short between '13 Ford and stock trailer
