1500 Ram 2020 trailer running lights fuse.

[Cas09]

Good morning, new here, but just acquired a camper and was towing it out when I realized that the running lights were out. I had brake and turning lights but not the running lights. It was suggested that it is the fuse. I am having trouble locating this fuse or what is would be listed under in the fuse box listing. If you have any information or advice on this issue I would gladly appreciate it.

 

[llando88]

Assuming a new ish 5th gen Ram I'd probably suspect the camper, not the truck, to be honest.

Can you verify the pin out of either the 4 or 7 way connection using a voltmeter to confirm there is 12V being supplied to the camper for the running lights?

Trailer Wiring Diagram and Installation Help - Towing 101

This trailer wiring guide comes complete with a color coded trailer wiring diagram for each plug type, including a 7 pin trailer wiring diagram, this guide walks through various trailer wiring installation solution, including custom wiring, splice-in wiring and replacement wiring. If your...

www.curtmfg.com

Fuses are listed in tabular form on page 394 of my Owner's Manual for my '21 Big Horn, perhaps they are in yours as well. The ones associated with towing lights are F08 through F12, located in the External Power Distribution Center, left side engine bay looking forward, near the battery.

I would guess the running lamps are a cartridge fuse, F12, but it'd depend on your truck.