I have a 1979 bronco Xlt . I just picked it up about a month ago . When i bought it I was told it had a 351m . I pulled the VIN code and it said it was a 400m . But its not either . Someone previous to the guy I bought it from put a 460 in from a torino . Awsome right ? Well it would be if the installer of the engine would have wired it all correctly . Now to my problem . It had a/c , but now it doesent . I just want to make the heater motor work properly so I won't freeze during the winter . I need either a wiring diagram , or someone's help with proper location , and wire colors to make this work properly . No big rush , Its been pretty hot lately , just want to be prepared for winter when its here . Any help is appreciated . Thanks .