The blower is hidden directly below the windshield wiper motor. You have to pull the wiper to access it. Surprisingly, it's not a bad job. Remove a bunch of trim in the area, four bolts to pull the wiper, and you are at the blower. Helps a bunch to have the shop manual for this one. About 45 minutes for a first timer DIY should get you to the blower motor.

Don't know about Arthur's blue wire, perhaps he'll chime back in.

- JimY