Thanks everyone for your input. To answer Stuart questions. I might of not had it on high and was it changed over to 12 volt? All i can say is I hope so. The truck was converted to 12 volt when I got it. The person that had it before me did't know anything about wiring. I had a real mess and tore everthing out and put a EZ wire kit in. I replaced all the switches except the heater one. If I were to replace this switch does anyone have a reconmendation.
Marcus
