I have a 1989 mercedes, great condition, runs great. recently I noticed the blower motor no longer works on high. auto and low still work. I think it is the blower motor resistor(regulator) where can I find the part at a reasonable price, or can I fix it myself. I just replaced one in another car(buick) it was just a resistor. Also my odometer does not work. I really dont care about it but when I have to get it inspected(I live in Pa.) They have refused to inspect it for that reason. I think it is probably the gear in the odometer where can I find a gear?