Trying to get the heater working

Very Nice! Tyler That ought to get him in the neighborhood. And I'll add that the heater cotrol valve is in the normally off position if that wasn't covered yet, as well as those old blower motors squall like crazy when the bushings in the motor get dryed up of lube. The end the squirrel cage is on can be gotten to easily with a little oil, but the back bushing is inside the motor case. If you drill a small hole in that hump on the back of the motor, (1/32 or so) that cavity is where the end of the amature shaft and bearing are and you can put a few drops in there for the back bushing. Afterwards a small dab of black RTV can serve to seal it back up so dust doesn't get in there.