Time to move this thread over to electrical where it belongs..
I finally got off my butt this weekend to fix the electical /blower motor issue I've been talking about.
I put a test light on the circuit - the switch and resistor tested fine. Then I put 12 volts direct to the motor and found it was bound.
I figured it would be a mouse nest in the plenum, so after much contortion I got the motor/fan out and found the plenum was clear.
The fan itself would only turn free about half a turn and then bind. I couldn't split the fan/motor apart with the fender skirt in place, so I dropped the skirt down. It wasnt as bad a job as you think, once you resolve yourself to using force (you have to put out of your mind it's a Gran Sport and treat it like a Ford Escort!)
Once I got the motor/fan out and split I found a strange thing - the motor housing is actually two pieces: the main motor housing and mounting flange, and an inset motor end cap that the armbature sticks through, welded and heavily caulked in place.
Over time the caulking dried and broke free, and a rather large piece was trapped in between the fan and housing flange, causing the fan to bind.
I cleaned it all up and re-caulked it, but still found the fan to be noisy so I picked on up at Napa for 21.00 - it goes in this afternoon.
Not that I'm driving the car alot this time of year, but I sure will enjoy having heat....
Rhett