heater fan control only works on high on 2000 Ford Focus

heater fan control only works on high

Asked by for the 2000 Ford Focus
2 answers
what is the answer
Usually a sign the heater blower resistor pack has failed. Right next to the heater blower motor under side passenger side of dash. four wires all have a black trace on them with the following colors, blue, yellow, white and orange. Part is about $20 about .5 hour to replace.