I have an 02 4 door 4.6l with the electronic climate controls. When I start up the car and turn the fan control to any speed except the very highest, my dash lights dim a bit and it seems like the motor is jammed or shorted. The moment i switch it to high, the motor kicks on, then I can go to all the different levels and it works fine. So is there a resister pack I need to replace? Should I replace the blower motor? (If so, is there a post that explains how its done)? Any help would be great! I'm worried other things may short out if on low speeds there is a short.