Quote:
Originally Posted by Jeremy5848
It still might be doable but it would take more work. A notch in the wheel at the rear of the fader could operate a microswitch; the microswitch would operate a relay that would connect the PBU to the blower controller "normally" (meaning, automatic speed control by the PBU). Out of the detent in either direction, the 'automatic' connection would be defeated and the potentiometer would govern the speed of the blower.
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That works except let's say ACC has the blower at 30%. If you roll the thumbwheel down to set the blower even lower, you'll crank to 50% before getting back to 30% on the way to 20% or 15% or whatever you desire. I'm looking for a way to have the ACC signal as a floating reference for the high end when reducing blower speed and the low end when increasing blower speed.
Yes, I am looking for a W140 SD
Sixto
87 300D