So I picked a second Ram for my work truck. It has factory Fog Lights and factory harness. However my headlight switch in cab is not what I would think it to be. It DOES NOT have the switch where you turn dial to turn headlights on and then pull out for turning fog lights on. Fog lights not working. So 1st question do some models have where the fog lights just turn on with the dial selector for headlights turned on. I found the fuse and relay also for fog lights, fuse is good for sure.

 

My guess is that at some point the original switch with fog was switched out for a new switch without fog??

 

I added fogs on my 04 2500 that wasn't shipped with them. Added a factory replacement switch with fogs, the wiring to the fogs, and they work fine. The only problem is the switch doesn't show that they are on. You can buy a reproduction switch, or buy a good used one.

 

Wrong switch, junkyard or they're cheap enough on Rockauto: https://www.rockauto.com/en/catalog/...mp+switch,4472