It is in the owner's manual,
It allows air to go to the 4 overhead vents in the middle of the van.

----- Original Message -----
From: "Eric Spletzer" <eric@CRAFTEDEARTH.COM>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Wednesday, August 18, 2004 4:40 PM
Subject: More Climate Control Issues

> Can someone please explain what the bottom blue lever does for those of
> us without AC?  3 years and I still can't figure it out.
>
> Thanks!
>
> -eric
> -------------
> '85 GL Camper (Moby)
> San Francisco, CA