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Old 11-17-2012, 07:41 PM   #1
Chicago5
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Trailer light issue

I had some issues with my trailer lights. I removed the trailer wire harness and started over. Now, this is what I have...
Lights on = Left light, right brake light
Brakes on = Left brake, right nothing
Turn signals = Left works, right nothing

Here is a picture (because I know how much we love a picture) with the lights on. The right trailer light is brighter. Any ideas?
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Old 11-17-2012, 10:17 PM   #2
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Re: Trailer light issue

Some of that might be the ground
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Old 11-18-2012, 08:51 PM   #3
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Re: Trailer light issue

OK. I'm learning as I go, but I was thinking a ground would be inconsistent. My dad is huge on not greasing his ball so the ground is good. Are you thinking a ground wire or the ground made by the hitch and ball? Thanks, ROYO.
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Old 11-19-2012, 04:22 PM   #4
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Re: Trailer light issue

i would test your wiring on the truck too.. my dad had the same type of problem on his 06 chevy and it popped a fuse in one of the fuse boxes and the wiring to the plug on the truck wasn't in correctly from the factory
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Old 11-19-2012, 06:15 PM   #5
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Re: Trailer light issue

I checked the S-10. When I hooked the trailer to the van, it was the same thing. I haven't ever messed with the trailer end of the wiring.
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Old 11-19-2012, 10:15 PM   #6
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Re: Trailer light issue

Quote:
Originally Posted by Chicago5 View Post
OK. I'm learning as I go, but I was thinking a ground would be inconsistent. My dad is huge on not greasing his ball so the ground is good. Are you thinking a ground wire or the ground made by the hitch and ball? Thanks, ROYO.
Tim, I never trust the ball for use as a connection.

AS I always say, Start from the beginning.. Hook a battery or jump from a battery to each trailer wire, find out if they work that way. If That's ok, do the same to the truck. That should solve that problem. But fix the ground.
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Old 11-22-2012, 10:14 AM   #7
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Re: Trailer light issue

I agree with Ron, jump off of a battery. It sounds like the issue is in the harness on the tralier, if it is doing the same thing with a second hookup source. It may seem tedious hooking up to a bat. but a test light and or meter will help trace the issue down. Good luck.

Alex
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Old 11-22-2012, 01:14 PM   #8
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Re: Trailer light issue

I used a spare battery to test each prong. The only thing I did was re insert the wire to the tail light connector on the right side. I have no idea what that could have done, but now, every function works as it should. Thanks for all the input here.
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Old 11-22-2012, 06:59 PM   #9
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Re: Trailer light issue

Quote:
Originally Posted by Chicago5 View Post
I used a spare battery to test each prong. The only thing I did was re insert the wire to the tail light connector on the right side. I have no idea what that could have done, but now, every function works as it should. Thanks for all the input here.

LOL, Wiring can be so crazy!
Glad it's fixed for you Tim.
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