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Old 10-08-2021, 03:07 PM   #1
Junior Member
Join Date: Feb 2021
Location: Snohomish, WA
Posts: 15
Rear lights out after plugging in tow dolly

Plugged in a new tow dolly today and the back lights in the RV now no longer operate. The lights on the dolly still work, as do all the lights in the front and inside the rig. Just the rear brake lights, turn signals, safety light on top of the rear end cap, etc., are all out.

Most likely blew a fuse when I plugged in the tow dolly.

My question for the forum: anyone know where the fuse is for that set of lights?

I'm in a 2021 Winnebago Adventurer 29B, so on the newer F53 chassis.

Many thanks in advance for any pointers or guidance (including how I can avoid blowing the fuse again once I replace it). Much appreciated!
Bob and Lisa
2021 Winnebago Adventurer 29B
Snohomish, WA
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Old 10-08-2021, 04:42 PM   #2
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Join Date: May 2016
Posts: 577
My F53 is much, much older but I had a similar problem. In my case I had at first plugged in the 7 prong plug wrong, (not properly aligned with this plug on the RV and shorted things out.) When I plugged it in correctly, and found the blown fuse I was good to go. In your case it seems a little squirrelly that the trailer lights work but not the RV, if it is any way caused by the trailer lights system or plugging it in wrong.
Marvin (and Eileen) - Weekend RVer On A Budget
1997 34í Gas Bounder / F53 Chassis | Towing 1996 Ford Ranger on Acme Dolly
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Old 10-09-2021, 12:25 PM   #3
Join Date: Apr 2021
Location: Hanover, VA
Posts: 33
There's a section in the chassis owner's manual that should tell you which fuse it is.

If you don't have it handy you can find it here:

Just keep in mind that some builders modify the fuse configuration.
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Old 10-09-2021, 06:08 PM   #4
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Join Date: May 2018
Location: Freeport
Posts: 560
Do the running lights work. Brake and turn signals are same circuit running lights separate.
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Old 10-09-2021, 07:43 PM   #5
Junior Member
Join Date: Feb 2021
Location: Snohomish, WA
Posts: 15
After reading a lot of fuse schematics, I finally gave up and called the selling dealer. Their guidance is that my problem isn't a fuse; rather, it is likely a wiring harness that connects power from the chassis to the rear lights in the motorhome. The plug has been come loose or damaged and needs corrected.

They recommend that I take the motorhome to a local Ford commercial service center. Nearest one to me is about 10 miles away and is closed over the weekend. Will call them on Monday and advise on the outcome.
Bob and Lisa
2021 Winnebago Adventurer 29B
Snohomish, WA
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dolly, light, lights, rear, tow, tow dolly

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