I would say that your headlight switch in the dash is fried. They are easy to pull out and check. I would be willing to bet that if you take it out and turn it around and look at the back you will see what you were smelling. They are pretty cheap also IIRC.. Hope this helps ya out.
1990 Dakota Sport, Lift Keys, 2" blocks rear, dual exhaust, custom camo interior(by me).
1999 Ram 1500 SLT Laramie 5.2L auto, K&N filter, nerf bars, dual exhaust(flowmaster) dumped behind wheels