What up Audi world! This is my second Audi and I am hooked! My first was a C5(99 a6) avant NA. It was a beast tho and so this time around I got the B7 avant which I love. So now that the coils are misfiring and I have a air fuel issue I decided to give her a few upgrades while in the garage. I got a decent vac/boost gauge as well as a MBC and to give her a little more after I install the ECS air intake converting kit. I have a stage two clutch in her already and would like to feel and hear the boost more before I put an exhaust on. My issue currently is two things. The vacuum line system on this B7 is a bit confusing with the hard pipes mixed with flex hosing. So I am un sure where to tap in for the gauge. Also I mounted the gauge inside the ventwell just to the left of the driver. I would like to use the headlamp switch pigtail to draw power and dim for the gauge but I can’t find wire color diagrams that show the switch. Can someone please help! Thanks!