@SteveJ

10 hours ago, Patcon said:

Cody fixed the blower motor today. The cage was binding on the back of the heater box

What does the blue wire from the blower fan plug go to? Cody didn't find it on the wiring diagram

It should be a wire coming off the Accessory Relay. In the 73, it's a blue wire. YMMV according to discussions I've seen on this board in the past. Look at where the Accessory Relay plugs into the wiring harness. One of those wires should be going to the center stack with a bullet connector.

Edited 3 hours ago3 hr by SteveJ

My early wiring diagram shows a red wire coming off the accessory relay connected to that blue wire. So I'm thinking they might have changed colors at the bullet connector. They did some weird stuff like that on the early cars.

Next time I have my HVAC panel off, I'll take a look, but it might be a couple days.