Are you sure it's not an evaporative (aka swamp) cooler? Seems more
likely, and simpler, than a compressed refrigerant system.

-Peter

On Thursday, April 8, 2010, Jerry Baker (Guido) <jbvelo@bellsouth.net> wrote:
> I recently acquired a 1984 Westfalia with the air conditioner
> in the upper rear overhead storage area.  This air conditioner
> seems to work with the 120V AC system.  My Westy also has the
> engine driven air conditioner compressor.  Does anyone out there
> in the Vanagon world know how these systems work (how is the 120V
> AC side separated from the 12V side??)
>
> Thanks for any info.
>
> JB  KY
> 88 GL
> 84 WESTY
>