Trailer Wiring Harness

in-too-deep · Jun 27, 2020

Looking for this harness for my BigTex
tractor hauler. It is part of a modular
sealed harness that is original equipment.
It goes from up in the gooseneck where the
breakaway battery is, down to the chain
box. Bigtex parts department is clueless
and I can't find anything online. The
letters "USAH" are molded into the end.
Anyone know who makes these or who
supplies them? I would bet most trailer
makes use the same harness. Thank you for
helping.

wore out · Jun 27, 2020

I've had good luck with etrailer.com, but I didn't see anything like your harness when I took a quick look there.

Is the disconnect needed or could you just remove it and wire direct?

in-too-deep · Jun 27, 2020

I might be able to use crimp on bullet connectors but I'd rather have a new molded sealed harness.

chuck machinist · Jun 27, 2020

Unfortunately your dealer is clueless. Contact the manufacturer and tell them make and model from the data plate on your trailer. I replaced mine a year ago.CM

in-too-deep · Jun 27, 2020

I called the manufacturer Big Tex directly and their parts people are useless.

caterpillar guy · Jun 28, 2020

Try one of the light companies like Grote or others. Also could try some of the semi trailer dealers. I have bought replacement parts like that from them for trailer tail lights on my trailers they had a whole harness for each side that pluged into the main coming back from the front. I know if you were to sue the seven pin plugs grote has complete harnesses for semi trailers and might even have the shorter front one you want.

in-too-deep · Jun 28, 2020

Good thinking. I'll try that.

Trailer Wiring Harness

in-too-deep

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wore out

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in-too-deep

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chuck machinist

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in-too-deep

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caterpillar guy

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in-too-deep

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