Toyota Repair: air-condition compressor, electrical connector, blower motor

Question
My query is regarding the air-condition compressor in my car, which will not engage unless I put the blower to the maximum speed. Thereafter, the compressor will continue to function even though I lower the bower speed. I have changed the blower switch but the problem persists. I have asked around and the answer given to me was either the compressor or the thermostat needed attention. If it is the thermostat, how do I get excess to it and check whether it is faulty?


Answer
The blower motor uses a resistor to provide the different speeds, since it only works on high speed the resistor is probably burned out and should be replaced, it is located below the glove box in the air duct housing and has an electrical connector with some wires on it.