120v a/c???   are you sure???

I recently acquired a 1984 Westfalia with the air conditioner
n the upper rear overhead storage area.  This air conditioner
eems to work with the 120V AC system.  My Westy also has the
ngine driven air conditioner compressor.  Does anyone out there
n the Vanagon world know how these systems work (how is the 120V
C side separated from the 12V side

-----Original Message-----
From: Jerry Baker (Guido) <jbvelo@BELLSOUTH.NET>
To: vanagon@GERRY.VANAGON.COM
Sent: Thu, Apr 8, 2010 8:42 pm
Subject: REAR AIR CONDITIONER

I recently acquired a 1984 Westfalia with the air conditioner
n the upper rear overhead storage area.  This air conditioner
eems to work with the 120V AC system.  My Westy also has the
ngine driven air conditioner compressor.  Does anyone out there
n the Vanagon world know how these systems work (how is the 120V
C side separated from the 12V side??)
Thanks for any info.
JB  KY
8 GL
4 WESTY