1974 Duster 318 Factory Air

Hey guys, finally took the plunge and switched to R134A...New receiver/drier, new expansion valve. All the goodies.

I'm having a problem with the blower motor. I can apply +12V to it, and it works fine. Other than that, no power.

I have a factory manual with wiring diagrams at home, but I wanted to reach out the best Mopar forum first...

Anyone have an issue with their blower motor wiring, and if so, any specific culprits I should run down before I start digging in to stuff this weekend?

Thanks guys!

-Ryan