Thanks to everyone for their suggestions....
Well, I disconnected & reconnected the door "twist-loc" connectors, and sadly that didn't solve the problem.... I then took dthe door trim off to see if there was anything that had come unclipped inside, wiggled a few wires while pressing the switch, but to no avail. ho-hum.
Curiously, while checking some fuses over, I found that fuse #3 in the power distribution box under the hood is for the heater blower fan, not ABS as stated in the little Ford handbook that comes with the vehicle. As I have no ABS on my car, I had taken it out to keep as a spare, only to find my fan wouldn't work......!!
