My factory fog lights stopped working on my 1999 Ram sport 4X4. The indicator on the headlight switch lights but that's it. The bulbs and fuse checks out ok. There is 12v at the lights all of the time. If I ground one of the pins on the lights they both come on. I've checked the switch with a continuity meter and it appears to be working. Am I missing a relay somewhere?

there is a relay in the pdc under the hood but first try removing the switch and disconnect the 2 way connector and ground the brown/yellow tracer wire this bypasses the switch

My factory fog lights stopped working on my 1999 Ram sport 4X4. The indicator on the headlight switch lights but that's it. The bulbs and fuse checks out ok. There is 12v at the lights all of the time. If I ground one of the pins on the lights they both come on. I've checked the switch with a continuity meter and it appears to be working. Am I missing a relay somewhere?

I dont have a wiring diagram for that but have you checked in the (PDC) Power Distribution Center under the hood for a relay?