Oh, boy have you stumbled on to a question!  Check the archives [something
I've never mastered myself] there is a ton on this.

Basically the westy were set up for this.  Check the compartment under the
driver's seat, opens the same way about as the one under the passenger seat,
and there may already be an electrical setup to do this.  If not, it's
relatively easy to do and the list vendors have the parts and instructions.

Mike

> From: fiddlesticks <sjselin@NETZERO.NET>
> Reply-To: fiddlesticks <sjselin@NETZERO.NET>
> Date: Wed, 24 Apr 2002 09:02:40 -0400
> To: vanagon@GERRY.VANAGON.COM
> Subject: Installing 2nd battery in 1980 Westy
>
>> There is 1 battery under the passenger seat.  I will often be camping for
>> 1 week at a time with no electric hook-up.
>>
>> Q: Is it easy to add a 2nd battery to use for the radio, fridge, and water
>> pump - and have it recharged by the alternator.
>>
>> Thanks,
>> Steve
>>
>>
>>
>>
>> _*_*_*_*_*_*_*_*_*_*_*_*_*_*_*_*_*_*_*_*_
>>
>>
>> Steven Selin      -        s.j.selin@vt.edu
>>
>> Forest Biology
>> Virginia Tech
>> Blacksburg, VA, USA
>> 540-231-5848
>>
>>
>