Resolved xtune boost gauge with no vacuum line repair

[uncle philly]

So I bought a bunch of parts off a guy parting a spyder, one of the items being a xtune boost gauge. The boost gauge is missing the vacuum line out, is this something I can replace? If so how and what do I need. I opened the gauge up and see where I think it goes but that really hasn't helped me much. I paid $30 for the a pillar with the boost gauge and 2 other gauge so I can't really complain but getting this working would be great instead of tossing it. Sorry no pics till I get home.
Thanks
J

 

[sleepertalon]

All you have to do is hook a vacuum line from the gauge, run it through your firewall and t into the vacuum line going to fuel pressure regulator