Jim Grant's Tech Tips
99 Mercury Villager, Heater/A/C Fan Resistor
Q: I own a 99 Mercury Villager and the heater and A/C fan will only work on high. I have done some research and found that it is most likely the fan resistor. If that is what it is, I would like to know the location of this resistor in my car so I can replace it myself.
Yea, I think you’re on your mark with that diagnosis. The blower resistor is located just to the left of the blower motor. If you have a regular climate control system the wire colors to the resistor will be green, yellow/black, light green/red and black.