Trailer Light Problem

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Fhunt

New member
Joined
Jul 19, 2018
Posts
2
I have an issue may y?all can help. I bought a vintage trailer and changing the the plug from a 4 flat to the original 7 way plug. Tail lights work previously. I reran wires to new plug and only my right turn and right tail lights work. Both sides work if I put on my 4 way flashers. I thought maybe bulbs so I got wired and straight connection from my tail lights to my battery on my camper. They both worked. Does anyone know what would be causing this issue? I hope I explained it clearly.
 

Kevin Means

Site Team
Joined
Aug 3, 2010
Posts
5,024
Location
Lakeside, California
Hi Fhunt. Welcome to the RVForum. It's impossible to say from afar, since we can't see it, but since the lights were working before, the new wiring must have been wired incorrectly, or there's a bad connection - somewhere. I think I'd start troubleshooting by ensuring that the new 7 pin connector was wired properly, then if so, I'd use a VOM to ensure that all the connections were good.

Kev
 

mudshark

Well-known member
Joined
Nov 15, 2014
Posts
503
A wise man once told me that when lights start to act weird the problem is usually a bad ground.
Make sure you are wired correctly and then make sure your grounds are solid.
 

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