I did this in my van, but it is not a westy so you this may not work for
you.  I used 2 6 volt dee cycle sealed jell cell batteries.  I used this
type because they fit perfetly under my seat and they do not vent into the
cabin.  I did have to remove the seat to install them but they are great and
I have 220 amp hours for all my accessories.

Pete
83.5 Vanagon

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----- Original Message -----
From: "HERMANN DE BOER" <hdeboer@BSSD.NET>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Tuesday, February 08, 2000 6:45 AM
Subject: deep-cycle battery

> Need some advice here:
> I want to install a marine battery underneath the rear bench. Any tips?
> Also, what can possibly drain my aux. battery when parked (not camping).
> Thanks!
> Hermann
> 87 Westy GL 2.0l Eurospec