a/c heater box hose diagram

[70challengerrt]

Does anybody have a diagram that tell you what vaccum hose goes to what pod on the a/c heater boxes. I have 3 or 4 loose hoses and can guess where 2 go but 1 hangs down and has no place to hook up to.

[Mopar73340]

Here is what the 73 service book shows. Hope these help.

[miketyler]

one drops down below the glovebox and goes thru the firewall for your vacuum source

[70challengerrt]

One goes from the box directly to the vacuum source? That may be my mystery hose that I can't figure out. Thanks Mike.

[miketyler]

yes, theres a large molded grommet that passes the source vacuum line thru the firewall. From there it attaches to the tiny line on the intake fitting behind the carb

I prob have pics somewhere 

[70challengerrt]

I have one line from the switch that runs to the vaccum source but not one directly to the heater box. If you have pics that would be great.

[miketyler]

I think the source for the system is fed at the plenum although it does go tothe switch. I could be wrong but the only connection at the switch is just the large multi line rubber plug. If you find out out different please post up your findings