Hi, Sebring '02, convertible back again with another problem. Heater/AC blower stopped working all together. Blower speed select switch does not work at any speed. 30 amp blower fuse good. Blower resister failed a few years ago, but would work on high (4) back then. Problem this time is no blower speed functions at all. Lights on control head work, rear defroster light works. Removed control head and sprayed contact cleaner on speed switch areas that were visible, but no improvement. Any idea what maybe causing this? Is there something else in the blower speed circuit that could cause this problem?