I would definitely take that jeep. I have an '82 Cherokee which as far as I can see is identical to a Wagoneer. The Blower motor is under the dash. If you remove the glove box and look down you will see it, should be pretty easy to get out. I would recommend getting a good shop manual though. Try Books4cars out of Seattle, I got a manual from them for about $75.00, and it was just what I needed. As for parts, BJ's Off-Road for new and J&W auto wreckers for used, aare both good sources. Good Luck.