My sister bought a wranglerin 98. After 5 years of very happy ownership, it started eating resistors. Like she always had one on hand or knew that it was an annual service. It still did it after replacing the blower motor(which I strongly agree with Dave here- replace motor when doing the resistor), after the 4th time, she got really good at swapping them. She traded the car in after about 12 years of ownership.