Hi, Does the power stage resistor control the center direction air flow dial on the ECC unit? Or just the blower speeds? My dual temperature controls work just fine but the center air flow direction dial does not seem to work. Most of the air just comes from the foot area and a little comes from the dash vents. I am working the blower just with a toggle switch mounted in the glove box, since I have already removed the resistor. It works only on high speed with the toggle switch. Will replacing the resistor fix not only my blower speed control switch, but also that air flow direction knob. Or is that knob not working indicate a bad ECC unit?