Vacuum hoses

[rudyck]

I just joined this fine group of Mustang lovers, and this is my first post. There are 2 small diameter hoses coming thru the center of the firewall. 1 of the hoses is connected to the vacuum can, my question, where does the second hose go to. This is a 72 Grande with the 351-2v and factory air. At present this hose is just hanging loose. Any ideas?  Thanks all, hope to spend more time on this site. :-/

 

[Hemikiller]

Attached the 71 vacuum diagram, 72 should be very similar. One hose to the vacuum canister, which is the supply hose TO the A/C system. The canister provides fairly constant vacuum so the A/C system doesn't constantly lose vacuum under acceleration. The other goes to the hot water shut off valve in the feed side of the heater core. A/C will not work well if this is MIA or inop.

 

[rudyck]

Thanks for the diagram Hemikiller. Now I have more questions: How do i tell the hose color? They all look black to me. On the diagram where the hoses come thru the firewall, the right hose goes to the A/C can, on my car the left hose goes to the can. Last but not least, what and where is the "heater water valve motor" located. Feel like a complete idiot asking these questions, but I've got to learn. Thanks again ::thumb::

 

[rudyck]

Well, I just did what I should have done before.  I cleaned the hoses and sure enough 1 was black and the other purple. The black was correctly connected to the A/C can, and I found and connected the purple to the Heater Water Valve. Now  I really feel like a ****. Thanks again Hemikiller, I appreciate the help.

 

[Hemikiller]

Glad you got it sorted!