It's getting cold, so I decided to fix my heat. #1 problem, the blower doesn't work. I pulled it and it was a little stiff, so I lubed it and now a 9V battery spins it. However, there's no power to the blower. #8 fuse is good. There's also no power at the blower resistors.
Based on some information I found in this thread:
http://www.peachparts.com/shopforum/diesel-discussion/306300-blower-motor-not-working-1984-300td-wagon.html
I'll be testing the switch on the thermostat housing a little later. I'm guessing that it gets a reference voltage and is supposed to be open when cold and short when hot, or maybe the other way around. As long as it does something, I'll take that as an indication that it's good.
If that doesn't fix it, what do I look at next?
Also, if fixing it the "right" way doesn't work, how many amps does this thing draw so I know what gauge wire and how big of a fuse to use for the improvised repair?