Anyone have a diagram or know which port the vacuum line from the floor vent acuator connects to on the back side of the switch? Someone removed the entire line from the back of the switch all the way to the floor vent. Also, anyone know what size line I need? If you know where all the lines from the back of the switch go, let me know.

 

There are 5 lines. The colors were ,Red, Blue, White, Yellow and Black.
Are all of them gone?
Are there any you can see at the various vacuum controlled heater doors?

You might be better off to go to a salvage yard and get the hose assy It has plugs on both ends that would be easy to install.
You most likely could get the entire Function control unit. They are the same for E, F series and some other models too.

 

Only the line to the floor vent acutator is missing. The other 4 are intact.

 

Something you might consider,

A good auto supply store will have assorted sizes of vacuum hose and even some fittings that will allow you to adapt to the ends of the missing line.

If you know what you want , there are all sorts of vacuum fittings available and you can get it all done pretty fast and easy. The biggest problem is finding a store that sells real auto parts. A good store will take you to the cabinet where all the fittings are kept and you pick what you need OR if the person there is knowledgeable they will help you find and get what you need. A phone call to a few stores will save you a lot of time and trouble if you ask if they carry any vacuum fittings.

If you don't get anywhere there, last resort is a salvage yard. .