Trailer light issues
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1st Gear
Joined: Apr 2023
Posts: 1
Likes: 1
Trailer light issues
Hey all, I Just got my 2024 f350, and I am having weird lighting issues constantly across multiple trailers. I was curious if anyone else had anything similar... one trailer, only brake lights, and turn signals work. One trailer, only the right turn signal, and so on. I believe I came to the conclusion that it is the truck, as when I hook up to another, I don't have these issues. Has anyone seen something like this from the factory? could it be a loose connection on the 7-way, or is the truck not grounded properly? any help is great.
FTE Legend
Joined: Jul 2005
Posts: 65,938
Likes: 1,432
From: Millersville, MD
The 7 way has a tendency to rust inside the case after time. Open it up and insure none of the wires (esp the ground) hasn't rusted thru. Also insure all the trailers have good ground connections thru their plugs. Do not rely on the ball to make a good ground.
3rd Gear
Joined: Oct 2024
Posts: 3
Likes: 0
Hi Jholmstead, have you gotten a resolution to your issue with the lights. I have a brand new 2024 Ford F-350 Platinum with the exact same issue. multiple trailers, all good, brake lights work and turn signals work, brakes work, but no running lights. Hopefully people start reading a post before spouting off all kinds of nonsense about rust and corrosion etc. and talking about issues that took place 15 years ago not even relevant. Just curious if you had it resolved. I stumped as well with mine. ????
More Turbo
Joined: Jul 2013
Posts: 708
Likes: 161
From: Everett, Washington
If the trailers have led lights there may not be enough current for the truck to properly sense the lights. I used the attached adapter to fix my issues on a 2020 f350. May be what you need also if the trailer lights are led.
https://www.etrailer.com/Custom-Fit-Vehicle-Wiring/CURT/C57003.html
https://www.etrailer.com/Custom-Fit-Vehicle-Wiring/CURT/C57003.html
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Fleet Mechanic
Joined: Jan 2023
Posts: 1,331
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Check for trailer light settings in the menus in the cluster. Many trucks can select LED or standard trailer lights. Search your owners manual for info.
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FTE Legend
Joined: Nov 2015
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From: Angier, NC
Hi Jholmstead, have you gotten a resolution to your issue with the lights. I have a brand new 2024 Ford F-350 Platinum with the exact same issue. multiple trailers, all good, brake lights work and turn signals work, brakes work, but no running lights. Hopefully people start reading a post before spouting off all kinds of nonsense about rust and corrosion etc. and talking about issues that took place 15 years ago not even relevant. Just curious if you had it resolved. I stumped as well with mine. ????
Do you know if you have power with a test light back at the plug or are you just plugging it in and no lights? I guess you did not see the post about pulling the plug apart looking for the issue?
Has this ever worked and just stopped? Maybe the truck was built on a Friday after a liquid lunch before a holiday weekend and the trailer wiring person did not get it 100 %
I will also take my 81 or my 02 (the newest I have) and 99% sure I would not have any problems with trailer light and the 02 went thru 12 years of New England winter.
Good luck with the issue
Dave ----
Tuned
Joined: Jul 2005
Posts: 424
Likes: 70
From: Somerset NJ
Hi Jholmstead, have you gotten a resolution to your issue with the lights. I have a brand new 2024 Ford F-350 Platinum with the exact same issue. multiple trailers, all good, brake lights work and turn signals work, brakes work, but no running lights. Hopefully people start reading a post before spouting off all kinds of nonsense about rust and corrosion etc. and talking about issues that took place 15 years ago not even relevant. Just curious if you had it resolved. I stumped as well with mine. ????
Fleet Mechanic
Joined: Nov 2015
Posts: 1,672
Likes: 675
From: DeMotte, IN
Hi Jholmstead, have you gotten a resolution to your issue with the lights. I have a brand new 2024 Ford F-350 Platinum with the exact same issue. multiple trailers, all good, brake lights work and turn signals work, brakes work, but no running lights. Hopefully people start reading a post before spouting off all kinds of nonsense about rust and corrosion etc. and talking about issues that took place 15 years ago not even relevant. Just curious if you had it resolved. I stumped as well with mine. ????
More Turbo
Joined: Jul 2013
Posts: 708
Likes: 161
From: Everett, Washington
Hi Jholmstead, have you gotten a resolution to your issue with the lights. I have a brand new 2024 Ford F-350 Platinum with the exact same issue. multiple trailers, all good, brake lights work and turn signals work, brakes work, but no running lights. Hopefully people start reading a post before spouting off all kinds of nonsense about rust and corrosion etc. and talking about issues that took place 15 years ago not even relevant. Just curious if you had it resolved. I stumped as well with mine. ????
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