Dash gurus, black vac line question

[90_Red_LX]

Hey all, where does the black vacuum line that comes through the firewall connect to on the dash side? A lot came up and I forgot a few things, and I can't figure this one out. Runs on top of the box. Thanks.

 

[stang&2Birds]

Try these:
From:
Mustang FAQ - Wiring & Engine Info


View attachment 201005 Mustang 5.0 AC/Heat/Vacuum Controls, in color, by TMoss:
http://www.veryuseful.com/mustang/tech/engine/images/Mustang_AC_heat_vacuum_controls.gif



View attachment 201006 Awesome color diagram, by TMoss, of the Vacuum Routing of for the '88 stang 5.0:
http://www.veryuseful.com/mustang/tech/engine/images/88Stang5.0Vacuum.gif

View attachment 201007 Typical Vacuum Routing for a Fox stang 5.0:
http://www.veryuseful.com/mustang/tech/engine/images/mustangFoxFordVacuumDiagram.jpg

 

[90_Red_LX]

Thanks. Looks like it ties in and gives vacuum to the entire hvac.