I made the mistake of letting a TA "mechanic" brake light issue on my practically new trailer a couple years ago. Long story short, he "accidentally" crossed some wires and left other wires exposed to the elements, and I wound up spending $1,100 on a new wiring harness several months later at a Utility dealership. Similar symptoms to what you're seeing on your trailer now.
Trailer tail lights stay on when nothing is powered
Discussion in 'Refrigerated Trucking Forum' started by Jennyspete, Feb 19, 2021.
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Look inside the actual plug. Experienced disgruntled Co. Drivers have been known to push junk/copper wire in 7way. Causing multiple circuits to power up. And how often does anyone look inside.
Ten Bears19 and DoubleO7 Thank this. -
Well its been awhile but I thought I'd post what the solution was. We found that a wire was shorting out at the back of the trailer in one of the small harnesses for the tail lights. How that caused so many issues I have no idea. Electrical is like magic to me. Thanks for everyone's suggestions.
RocketScott and slow.rider Thank this. -
Thanks for coming back to update, many don't
Current will find a path to ground however it can. Because trailers don't use a dedicated ground wire and in stead ground through the frame/chassis of the trailer weird stuff happens
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