No running lights on trailer
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3rd Gear
Joined: May 2026
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No running lights on trailer
I have a 2011 Ford F450 that has the fifth wheel package as well. Running lights on my trailer we’re working before. The only thing functioning now is the hazard turn signal and brake lights. I’ve replaced the relay as well as the fuse with no luck. I’ve also replaced the seven pin and four-way adapter on the bumper assembly. Any other thoughts of what the issue might bewould be greatly appreciated.
The trailer lights work, on my son’s Dodge, as they should.
The trailer lights work, on my son’s Dodge, as they should.
Laughing Gas
Joined: Feb 2014
Posts: 817
Likes: 297
From: KY
Were the fuses you checked burnt? Next thought would be the tail light wire came out of the tab in the female/truck end trailer socket. Typically a tiny little screw holding the electrical part into the body. Pull the screw, and with a enough slack in the wiring you should be able to push it out of the body and check/clean/tighten where the wires are landed.
Thread Starter
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3rd Gear
Joined: May 2026
Posts: 3
Likes: 0
Were the fuses you checked burnt? Next thought would be the tail light wire came out of the tab in the female/truck end trailer socket. Typically a tiny little screw holding the electrical part into the body. Pull the screw, and with a enough slack in the wiring you should be able to push it out of the body and check/clean/tighten where the wires are landed.
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3rd Gear
Joined: May 2026
Posts: 3
Likes: 0
I'll take look at the ground near the 7pin. Hoping it is the one on the drivers side rear frame rail.
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