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원문 게시자: Greg R ,

텍스트:

Yesterday I received and installed the new 7-conductor wiring harness.  This is the part that physically plugs into the tow vehicle and runs into the fuse block/power distribution in the trailer.  Installation involved pulling the line inside the frame and crimping new connectors on each conductor at the fuse block.

A quick test by plugging into the truck and the brakes worked as I hoped!  So I'm guessing my theory was correct:  the old, mostly broken ground wire was a good enough ground to operate all the trailer lights.  But it wasn't enough to support the significantly heavier electical load required by the brakes.

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