There is a vaccum line running from the passenger side of my truck to this top of my plenum. The line runs into this thing that has three red wires running in to it, the vacum line, and another little port thing that is blocked off. I can't figure out how to post pics so if someone would help me it would be much easier to see what i'm talkin about. If anyone knows what i'm talkin about or knows how to post pics, i would appreciate the help.