More (!) thanks to this thread. I read this prior to tackling the (inoperative) cabin blower motor replacement job. I used my Power Probe to check the ground (good), then power the blue wire (still no fan). I stuck my finger in there and gave the fan a push (it pushed easily) and BINGO. It works now! I'm going to hot wire it ON for awhile, see how she does. VERY HAPPY ALFA OWNER RIGHT NOW.
Now on to the next project. Fix the broken, driver-seat, RF attaching pedestal, for the seat track. The weld broke at the floor. Looks like it needs to be welded from the top.