Why is there a different switch to turn on the A/C in a car?
Im looking to buy a used car and I came across a 2002 Buick Rendezvous. Looks and drives great but im a bit skeptical because to turn on the fan for the A/C or heat there is a switch thats on the end of the dash board that looks like a mechanic installed to turn on the air and the regular switch to turn on thr air does not work. Why would you have to install a different switch in the car? just curious?