I need some of the same answers. I can tell you that the vacuum tube runs along the top of the screen and into the door pillar, then pops out under the dash, but what happens then I also need to know as mine was broken off under the dash when I got the car. Presumably it goes through one of the many holes in the bulkhead.
And I also need parts to refurb the vacuum motor.
And I also need parts to refurb the vacuum motor.