Trailer lights work with one truck but not another
headhunter
Reg. Oct 2004
Posted 2013-02-25 11:13 AM (#150150)
Subject: Trailer lights work with one truck but not another



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Posts: 736
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Location: Western WA
Looking for some troubleshooting ideas. Pulled my friend's BP trailer this weekend for a short haul. The top right brake light and right turn signal didn't work. Lost the entire right side unplugging and replugging, then at least got the bottom right back after cleaning both the truck and trailer connections. Never did get the top right to work. I have running lights, left turn signal, and brake lights on the other three lights.

When she pulls with her own truck, everything works.

When I pull my own trailer, everything works.

The only difference between the two I can think of is she has older traditional lights, I have LED's. Do LED's need less of a connection (ie: Could the connections on my truck still be the issue)?

Any other ideas?

Edited by headhunter 2013-02-25 11:16 AM
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gard
Reg. Aug 2007
Posted 2013-02-25 11:33 AM (#150151 - in reply to #150150)
Subject: RE: Trailer lights work with one truck but not another


Expert


Posts: 5870
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Location: western PA
Your plug may not be wired the same as hers. If everything works with your respective trucks and not with the other, you have a source incompatibility problem. If you want to continually use each other's trailer, one of you will have to rewire your trailer's plug so it is comparable with the other.
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headhunter
Reg. Oct 2004
Posted 2013-02-25 5:46 PM (#150164 - in reply to #150150)
Subject: RE: Trailer lights work with one truck but not another



Elite Veteran


Posts: 736
50010010025
Location: Western WA
That will definitely be a place to start, but wouldn't both right side lights be affected, not just the top one, if there was a compatibility issue?
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loveduffy
Reg. Feb 2006
Posted 2013-02-25 9:32 PM (#150169 - in reply to #150150)
Subject: RE: Trailer lights work with one truck but not another



Expert


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Location: NY
I had this happen to me and it turned out to be a dirty plug on the truck a good cleaning and all work again I used sandpaper to clean
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