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Old 08-25-2019, 02:15 PM   #1
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Join Date: Apr 2016
Location: Mount Ephraim
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Question Lights

Hi all. We have a 2010 Jayco Jayflight 22 FB. Just returned from short trip & noticed the running lights on trailer were not working. The turn signals & stop lights are working on trailer. Any help is appreciated!
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Old 08-25-2019, 03:43 PM   #2
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Start with the truck and work backwards. If you have voltage at the 7-pin socket, then the problems in the trailer wiring.
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Old 08-25-2019, 03:45 PM   #3
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Could they be on a separate fuse?
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Old 08-26-2019, 08:24 AM   #4
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I had this problem with an old trailer. I never completely figured out the root cause, but I always had to replace a fuse in the truck. I'm sure it was a short somewhere in the trailer wiring because the problem stopped when I sold that trailer, but I never did find it. I think I had to replace that fuse 3 or 4 times over a 2 year period.
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Old 08-26-2019, 08:46 AM   #5
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Not sure how they wired the OP rig, but since it's a 2010, there's a possibility the ground wire for the at circuit is an issue. On my rig, a whole bunch of different grounds come back to a common point on the frame. If one of those connections are corroded (a common problem here on older rigs), that would cause the circuit to stop working.

Maybe a quick slide under the rig and trace some ground connections should be considered.
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