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Need help to trouble shooting the cause of Charge Line blown fuse


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On my Class A (Ford F53 chassis), if I pushed the brake pedal a few times , the Charge Line fuse blew up, this is repeatable.

When that happened, I lost power on Hot and trailer break on 7 way trailer plug

I looked under the RV, the wire for the 7 way trailer plug, everything looked normal and I did not see anything obvious such as damaged wire etc..
How do I fix that?
I do have a multi-meter.
Any help will be greatly appreciated.
Thanks in advance.
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Welcome to the Escapee forums! We will do our best to help.

You didn't say what year your F53 chassis is so I chose data for 2013-16 to look at. I did find a fuse #13 on the power distribution fuse panel in the engine compartment that is labeled Trailer tow electric brake controller feed, so am wondering if that is the fuse that is opening? Do the trailer brakes work as they should before and after the fuse opens? Is it possible that there could be moisture inside of the housing for the power plug? Next I would be looking for somewhere that the wire harness might have been pinched or chaffed. 

Good travelin !...............Kirk

Full-time 11+ years...... Now seasonal travelers.
Kirk & Pam's Great RV Adventure



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