Getting familiar with this forum, Thanks to everyone for the inputs.

Of course there is a lot to do to this truck since I rescued her for years af neglect and oil field use so that is why I am here.

Ford (they are not alone) loves those hard vacuum lines apparently because they have been on every newer ford I have ever owned. They are fine if you find the break and patch it, BUT...

This truck has many broken off and the previous owner apparently just bypassed most of the breaks just so he could have heat. The remainder of the broken linesa have been discarded. The Chilton manual shows the vacuum for the engine but nothing for the HVAC system. Dont really have time to "trial and error" the system, so that is why I am asking for help AGAIN!

Does anyone have a diagram for the heater/ac vacuum control system?