I ended up making a little reference plate for my Vanagon’s Air controls. For those of you who don’t know the controls that the Van has can be a bit cryptic and this little reference plate simplifies the matter. I got the idea from a post on The Samba and have included it in the references section bellow. The CAD file as well as a pdf of the nameplate can be downloaded as well. You just have to find a nameplate engraver and you’re good to go.