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re: Pulled the wiring harness from my fifth wheel
Posted on 4/8/24 at 8:32 am to GAFF
Posted on 4/8/24 at 8:32 am to GAFF
Just a short piece of wire would probably work. Jump for instance the power pin to the ground pin in the trailer connecter, and then you can check ohms at the other end of a wire that you suspect is power. Check between the wire end and the frame, it'll either be opened or closed. If it's closed, you know that wire ends up on the power pin in the connector. Make sure you unhook the breakaway battery and any other batteries on the trailer first.
Don't take this the wrong way- you should read up on DC circuit troubleshooting. The first thing to do is identify what wires go where at the connector. Jacket color is largely meaningless with trailers, you never know what the dudes at the store did with it.
Don't take this the wrong way- you should read up on DC circuit troubleshooting. The first thing to do is identify what wires go where at the connector. Jacket color is largely meaningless with trailers, you never know what the dudes at the store did with it.
This post was edited on 4/8/24 at 8:34 am
1
Posted on 4/8/24 at 11:23 am to DownshiftAndFloorIt
quote:
DownshiftAndFloorIt
I did somewhat that to identify which wires were to what lights. Jumped a wire from a 12v battery to each wire and then see what operated. None of the white wires or blue wires operated anything lights wise. That’s where I assumed the white wires were ground/negative and the remaining blue were the brakes.
To my understanding there should only be one wire controlling the brakes. I haven’t tested the white wires to the brakes so it may be possible that one of the white wires is actually the brake control wire but that still leaves me an odd ball blue wire that goes to something.
This post was edited on 4/8/24 at 11:26 am
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