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08-19-2014, 05:33 PM
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#1 |
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Senior Member
Join Date: Jan 2008
Location: Texas
Posts: 706
Likes: 77
Liked 100 Times in 51 Posts
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Re: Strange truck/trailer electrical problem.
Most all "strange" electrical problems come from bad grounding. I always recommend running a separate ground wire for the trailer wiring and not rely solely on the hitch to make the ground.
Dan |
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09-17-2014, 04:54 PM
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#2 |
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Senior Member
Join Date: Sep 2006
Location: Bellevue Ohio
Posts: 984
Likes: 0
Liked 11 Times in 8 Posts
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Re: Strange truck/trailer electrical problem.
My son just had a similar issue with his rig...only when he turned his ignition on the trailer brakes would apply (turning the ignition on makes the Aux. battery terminal hot in the 7 pin plug, at least on the fords) He unhooked the plug a few times and it stopped but I'm certain there's corrosion in either the vehicle plug or the trailer plug or both. The only other option is one of the 2 is miswired. If the truck has the factory 7 pin plug then that would be wired correctly, at that point I'd look closely at the trailer wiring. Good luck Joe BTW any modern enclosed trailer has a dedicated ground wire in it's plug...so grounding thru the ball is a thing of the past.
__________________
Joe Buchanan SS/BX 3117 |
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09-22-2014, 08:30 AM
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#3 |
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Junior Member
Join Date: Aug 2010
Posts: 91
Likes: 8
Liked 3 Times in 1 Post
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Re: Strange truck/trailer electrical problem.
Poor ground.
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09-22-2014, 10:59 AM
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#4 |
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Senior Member
Join Date: Sep 2007
Location: Henderson, NV
Posts: 586
Likes: 9
Liked 56 Times in 29 Posts
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Re: Strange truck/trailer electrical problem.
You might also check the trailer wiring where exposed for rodential munching.
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