A/C control vacuum line -- diagram?

[defiance]

Ok, I recently discovered that some brainless twit at some time in the life of my car mangled my a/c control vacuum lines.  Ok, fine, I've got them mostly repaired, but now I'm trying to figure out where they go...  anybody got a diagram of which lines go where on a '72 rallye?

[Nacho-RT74]

do yo mean lines underdash to doors actuators ?

[defiance]

Yeah, the big bundle from the A/C controls to the heater box controls...  I'm trying to make some guesses now, but I don't think I've even got the input right

[Nacho-RT74]

OOOps, sorry I though that I had a hose chart somewhere...

If color trace codes are the same, it should be since My car even was assemblied here, uses the same USA parts, i Think I could help. I'll have to check down my dash. Do you still have the original hoses ?

[defiance]

Parts of 'em!  I've got about 18" of good hoses starting at the control box - basically, just past the quick-disconnect block - two with a red stripe, two with a white stripe, one without a stripe, and one with a yellow stripe.  after that, they're mangled.  I've got plenty of extra hose and little junction thingies here, so I can make the rest, I'm just going mad trying to figure out what goes where!

[defiance]

Uck.  I guess I'm stuck with trial and error

Ah well, once I get it figured out, I'll post a diagram and hopefully save someone else a pita

Can anyone confirm which one is the input?  I'm thinking it's the black one (no stripe)... but that's just based on the fact that I THINK that would be logical...

[defiance]

Ok - think I've got this... Don't laugh at my mad paintbru$h sk1llz! 

Anyway, this 'box' represents the box layout and the actuators.  This is looking at the box from the top, with the funkety oval representing the external vent.  each of the little circles is an actuator, with the little rectangles on them representing inputs.

The other square with little circles in it represents the a/c vacuum hose bundle connector.  The bottom right one is closed off for whatever reason.

Tube 1 (red stripe) is the exterior vent close, 2 (white stripe) is exterior vent open.  3 (no stripe) is input.  4 (white stripe) is dash open, 5 (red stripe) is dash closed.  Finally, 6 (yellow stripe) is the defrost actuator.  Note that number 4 connects to two different actuators; the second one does a 'partial' bypass of the heater core to allow more airflow when not heating.

Hope this helps somebody someday.  It was a pain until today; I got a little vacuum pump for my a/c stuff, and was able to connect it instead of keeping on trying to do it 'manually'... bleh..

[Todd Wilson]

Be very careful with the yellowed with age plastic manifold that those hoses plug into. It can crack and leak and then your stuff dont work. Fighting that  problem right now on my 74 truck. I'll look around and see if I can find a picture for you.


Todd

[defiance]

Here's a photo of the segment from the switch to the manifold I think you're talking about:

http://cgi.ebay.com/ebaymotors/Mopar-1971-74-B-Body-Ralleye-A-C-Vacuum-Switch-Lines_W0QQitemZ4650213827QQcategoryZ10076QQrdZ1QQcmdZViewItem

where the black end connects to the switch, and the white part (manifold thingy) connects this segment to the main hoses...
you're talking about the white part here, right?
Or are you talking about the same basic thing, but on the switch itself?