Congratulations on getting light on the subject, Mark.  So far as the function of the levers, that is described fairly well in the owner's book.  Though the control system is unnecessarily complex compared to most heat and ventilation control systems on most vehicles, it actually works well (if all parts are in working order -- heater valve that admits/excludes coolant to/from the heater core and its wire  for example).  mcneely

p.s.  Didn't know you guys in San Diego needed either heat or air conditioning, given that you have the greatest heat sink/source on earth right at hand in the Pacific Ocean and its currents, coupled with the handy desert.

---- "Mark L. Hineline" <hineline@OCOTILLOFIELD.NET> wrote:
> Last night, on a short drive in my '82 Westy, I decided to turn the
> heat on and warm my toes just a tad. I did it by feel, as the levers
> were unlit.
>
> This morning I decided to find out whether the levers for the fresh
> air and heat are supposed to be lit. Thus began a spout of obsessive
> behavior during which I pulled out the radio, the lighter, the
> instrument panel, and the heater control face. I traced wires and
> studied the Bentley until finally I found the wires and sockets. Then
> I did battle with the bulb to make it light up. Six hours later I had
> light behind the levers.
>
> Now to figure out what the bottom two actually do.
>
> Mark

--
David McNeely