I have a 2000 wrangler. When I bought it blower didn't work on 3. Then it went out altogether. I replaced the selector switch and it worked for a week, and went out again. I replaced the switch again and it worked for a day. I replaced the resistor and switch, it worked for 5 minutes. I have checked the wires, the plugs and they look good. When it works, it blows fine. Is it possible that the motor is bad and causing the switches to burn up?