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  #11  
Old 03-30-2016, 07:40 PM
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JasterCraft JasterCraft is offline
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Just pulled the light to check the ground. There is a light coat of rust on the inside of the trailer where the ground wire is connected.

I sprayed some WD 40 around it and plugged the truck in just to see what I was working with. The side running lights were illuminated but very faintly, the tail light had nothing. I realize that spraying a little WD doesn't constitute cleaning the grounds but I'm curious why/how things would partially light. The best way I can describe it is how a flashlight looks when the batteries are nearly dead.

Thanks for the input.
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  #12  
Old 03-30-2016, 07:45 PM
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Clean and sand down all areas where the grounds need to be re-attached including any eye hooks. Re-attach grounds tightly and spray or coat with rust oleum paint once you have everything working right..
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  #13  
Old 03-31-2016, 12:16 AM
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Quote:
Originally Posted by JasterCraft View Post
More details...

Just pulled the light to check the ground. There is a light coat of rust on the inside of the trailer where the ground wire is connected.

I sprayed some WD 40 around it and plugged the truck in just to see what I was working with. The side running lights were illuminated but very faintly, the tail light had nothing. I realize that spraying a little WD doesn't constitute cleaning the grounds but I'm curious why/how things would partially light. The best way I can describe it is how a flashlight looks when the batteries are nearly dead.

Thanks for the input.
A bad ground is the same as a bad hot. They both need a good connection. If it is the ground, that wd40 may have given it a partial ground. That in return gave it partial voltage. Takes 12v for correct operation, sounds like you're getting half if that.
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  #14  
Old 03-31-2016, 12:20 AM
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Check the ground on your vehicle also. I rewired a trailer once before I realized it wasn't the problem.. Bad ground on my truck, so if there wasn't a good connection on the hitch, it had no ground!
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  #15  
Old 03-31-2016, 01:13 AM
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I had an issue on my old eagle trailer and it ended up being the wires rubbed on the trailer shorting them out and fried all one side. What circuit is bad? brake tail turn and which side


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  #16  
Old 03-31-2016, 10:10 PM
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I've hooked the trailer up to another truck and it still has poor lights so I'm thinking it's definitely the trailer lights.

Tonight I cleaned up the ground near the bad taillight with no success. I started tracing all of the wiring throughout the trailer and I'm seeing several corroding connections and rusty grounds. I'm thinking I'll make it a weekend project to just re-wire the whole thing.
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  #17  
Old 04-03-2016, 07:29 PM
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Update:

I'm so frustrated. I cleaned EVERY light's ground on the trailer. I replaced most ground connectors. I discovered this in the wiring harness...



...so I replaced it.

When I hooked it all back up to test, I was rewarded with one strong taillight and several other half-lit or totally non-working lights.

Before I hand it over to the pros, does anyone have a suggestion?


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  #18  
Old 04-03-2016, 07:31 PM
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New one of those. Cheap and easy.


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  #19  
Old 04-03-2016, 09:11 PM
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I would check the light functions at the trailer connector to make sure you have the proper signals there.
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  #20  
Old 04-03-2016, 09:25 PM
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Quote:
Originally Posted by thatsmrmastercraft View Post
I would check the light functions at the trailer connector to make sure you have the proper signals there.


Can you explain more, I'm not sure what you mean.
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