details of the pressure switch plumbing... I had to get a couple little pieces in addition to what came with the kit from KTA-ev.com . I got a 1/4" MIP-FIP street elbow, and a 1/4" close nipple so I could get the hoses turned in the right direction quicker. I also decided to use teflon paste rather than the included tape in hopes that the vacuum seal will be better.