My '66 Star Chief Executive is in the shop with a failed blower motor. It was replaced four years ago; car has AC. They tell me that the unit is not getting power, but as the car is so old, they do not have a wiring diagram to find out where the unit taps in to get its power. Fuse OK. I used to have a shop manual, but it was stolen. Until I can get another, does anyone know where on the wiring harness or voltage regulator the blower hooks up?