Back towards rear is off, front is on.  Controls flow, best to be all on in
winter and all off in summer, or you'll have a hot heater core under the
seat!

Stuart

-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of
Eric Caron
Sent: Wednesday, July 23, 2014 2:53 PM
To: vanagon@GERRY.VANAGON.COM
Subject: back heater lever question

Hi folks,

        under the back seat on the passenger side is a lever on the side of
the heater.  It can be reached through a opening in the box.  I'm guessing
this controls how much heat comes out the rear radiator.  Can someone
confirm what this does and also what the position at the back of the bus is
and the position toward the front?

Eric Caron
85 GL Auto