Is it because of a bad electrical connection, and if so, how would I fix it? The four way flashers only work on the driver side of the trailer as well, I.e. they only flash on the driver side when I turn them on. The tractor lights work fine.
Why would the driver side turn signal on the trailer work, but not the passenger side?
Discussion in 'Questions From New Drivers' started by Davidbenjamin, May 10, 2021.
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Check your pigtail pin connection. Look for bent/tarnished/damaged/missing pins or pins with grease on them before anything else. Also check the holes as well to make sure the metal hasn't stripped off for example. Next either get a voltage tester and check the pins are actully giving voltage or replace the pigtail.
Odds are good that is the problem. If not it may be a blown fuse though thats unlikely if the truck lights work. Otherwise something shorted in the trailer which can be much harder to track down.NavigatorWife, slow.rider, Davidbenjamin and 1 other person Thank this. -
Pull your pigtail and meter it while you run your blinkers. If you have juice, it's in the trailer. If not, it's in the truck. Work your way that direction. But my guess is a loose/busted wire at the pigtail, or corrosion inside of one of the 7-ways.
NavigatorWife, Davidbenjamin and Cowboyrich Thank this. -
On a freightliner, the right and left are two different circuits.
Make sure it isnt a blown fuse. If it has a resetable breaker. lightly touch the outside, if it is hot you have a shortRubyEagle, NavigatorWife, God prefers Diesels and 3 others Thank this. -
I'm back up and running now. All I had to do was spray some wd40 in the pigtail. Thank you all for helping.
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Davidbenjamin, NavigatorWife, God prefers Diesels and 5 others Thank this.
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Thanks for ck. back in that you got it working, that turn sig. must be working all the time, if you roll up to a DOT insp. and its quit again you will be put out of serv.
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There is another quick test I have done many times over the years. If you have been doing pre/post trips you should have confidence in the tractor systems working right. If the tractor's lights are working but the trailer is not AND you have been doing the pre/post trip inspections on the rig in the days before you can be 99% sure it's in the trailer. If I am where I can I will report that trailer and go slide under another one.
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Both are annoying and it may be cheaper timewise to just buy a new green cord with the ends already done up -
https://www.amazon.com/Dow-Corning-Ring-Silicone-Lubricant/dp/B08P5RJVLWDavidbenjamin Thanks this.
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