Trying to get the heater working

Well, I feel better now. After sucking all the info I can out of you guys, I get to give something back. With the motor installed in the firewall, the driver's side terminal goes to the dark green wire in the harness and the passenger grounds to a convenient place on the firewall. The motor is a Denso AY166100-0402. It's just screwed in with some self tapping sheet metal screws. The wheel was a tight fit through the whole and the PO might have enlarged it a hair from the looks if it. Not a perfect fit but workable.