Need Vacuum Hose Diagram F-150 Pickup

I have a 1979 F-150 Ford Pickup truck with a 400 engine and automatic tranny. Something got under my hood and tore up some vac hoses. (Probably a raccoon). Replacing the hoses themselves is not the
problem. Knowing where they go is......
There is a TEE with 3 or 4 hoses directly behind the carburetor near the firewall. One is plugged, one goes to the tranny via a metal tube, the other one is completely missing so I have no clue what goes there. I think I have the others figured out, but would like to know for sure. Can anyone furnish a scan or link to a website with this diagram, please.
By the way, why wont the tranny shift into 3rd when that hose is off for the (vacuum diaghram or whatever thats called). I had no 3rd gear till I put that hose back on.

Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
Add image file
Upload is a website by car enthusiasts for car enthusiasts. It is not affiliated with any of the car or spare part manufacturers or car dealers discussed here. All logos and trade names are the property of their respective owners.