Heater blower

Just to follow up, I see that the bypass switch is mechanically operated. I won't know until I can get to the car tomorrow, but I have a real clue as to the problem. Some where in it's life, the underhood A/C components were removed, but the underdash parts are there. There is a metal bracket that restricted one of the doors from moving that I have not reinstalled because it didn't make sense to me. I have a feeling that if I reinstall that bracket the heater blower will come back to life.
I'll post a reply tomorrow
Thanks again