I had been driving for about 15 minutes and then I noticed a burning plastic smell. It was dark so my headlights were on. I felt heat coming from under the dash by the pedals. I started to watch my dash to see if the truck was over heating or the check engine light would come on but neither of those happened. The next light I stopped at I could see smoke coming from the driver side air vents. I pulled over and opened the hood and nothing. Well after some extensive searching I located the issue. The headlight switch to control my headlights was completely melted. Had I not pulled over and popped the hood, Im sure the truck would have continued to catch fire. I replaced the fuses and switch and have not had any problems there but I do now have problems with my odometer lights. I cannot seem to keep that fuse from popping. Everyone I replace just pops again. So I have an electrical issue somewhere I guess I’ll just have to start chasing wires!