Ford Repair: 1977 Ford truck Emission Control, flatratetech, 1977 ford truck

Question
We have a 1977 Ford truck 250 super cab that passes smog but the won't pass the visual inspection as they don't know how it is supposed to be hooked up.  Do you know where we can find Emission control diagrams for this vehicle?

Answer
If the underhood sticker is missing, about the only chances are a library that might have a repair manual, or a local dealer that might still have books from that era.
There are many online forums you could ask about this and see if anyone has the diagrams or books. Fordforums.com is one, flatratetech.com is another. The latter charges a nominal yearly fee for advise, just so you know. There are many others, someone out there might have what you need. I nor my shop has diagrams or books that old.