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Troubleshooting New LED Tail Light Not Working When Connected To Trailer

Question:

I’m switching my tail lights on my trailer to LED lights when I plug-in the new LED lights one side works the other doesn’t when I hook up the other side one white doesn’t work unless I plug-in one of the old tail lights but it won’t work if I plug in the new light whichTo see if the light is working it does but it won’t want to plug it in to the harness on the trailer was the old light will.

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Expert Reply:

It sounds like based on the description you provided of the issue that one white ground wire is not working on your new LED tail lights.

I would first make sure that the connector on your new LED light that is having the issue does not have any debris in it causing the connection issue.

Next check the ground wire going to that light and make sure it is securely connected to clean corrosion free metal. Ground wires being loose can cause all sorts of havoc.

If these steps do not fix the issue just let me know and we will go into more in-depth troubleshooting.

I included a link to a helpful article on wiring for you to take a look at.

expert reply by:
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Samuel C

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