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Fuse Locations for Trailer Running Lights on 2011 Ram 2500  


2011 ram 2500 running trailer lights I just read the response to a previous question on this thread and Im hoping you might be able to tell me where I would find the relay for the running lights?


Expert Reply:

I took a look at the online version of the owner's manual for your 2011 Ram 2500 and found a couple of fuses you will want to check inside the power module located in the engine compartment. There should be a 40 amp green fuse located in the J01 position and a 20 amp blue fuse in the J14 position. Both of these fuses are related to trailer lights so you will want to check to make sure they are present and in good condition.

If the fuses are good and you are having issues with the trailer running lights, please let me know and we can continue to troubleshoot other possible causes.

expert reply by:
Chris R

Rob C.


Chris R. Thank you so very much! I also have a 2011 Ram 2500. I rented a U-Haul trailer tonight and once it got dark noticed that the running lights were not working. I found your message as well as the burned-out 20 amp J14 fuse within a few minutes. I swapped out a 20 amp fuse from a circuit that I wouldn’t need tonight and I’m on my way again. Thanks again – you’re a lifesaver!

Etrailer Expert

Chris R.


That's awesome to hear. I'm really glad I could help!



@ChrisR that’s it... J14, which isn’t labeled “trailer” anything... thanks for your reply, saved me too

Bob B.


@Jtjust used this also worked great it was the 20 amp fuse bad thanks
See All (5) Replies to Rob C. ∨



This information was 100% spot on to solve my issue of not getting 12v at the 7 pin connector on my 2012 Ram 2500. The 40a fuse at J1 was blown due to the body shop f***ing up my trailer wiring harness when they replaced the driver's side bed side. Thanks!!!

Etrailer Expert

Mike L.


@Keith Awesome, we're glad to hear that you've got everything straightened out!



I try but no power to the hitch plug , I found out there is 3 fuse dead The turn signals lights work and the brake lights work but no power for running lights

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