http://www.peachparts.com/shopforum/diesel-discussion/314017-vacuum-line-question.html
Post #3 has a pic from whunter showing the plumbing.
The pic here shows my CD, the lines go to a "bus" I think it's called, at the fire wall to enter the cabin.
A solid brown line from the vac pump and a brown/violet line going to the actuator.