I have followed the procedure in my FSM and it points to a bad switch. The car side of the harness to the switch has power, switched (or timed) power, good ground, and I can jump the compressor from there. Both fuses check out. If I jump the compressor (pins A and B on the car side of the harness) the pump runs and the bags inflate. The two junkyard swtiches I grabbed though don't seem to work. That seems to be an awfully high failure rate although granted, they ARE junkyard parts.
Is the ALC switch a dealer item? How about the pump, is it servicable? It does seem to bleed down fairly quickly, in a couple of days.