You may get some disagreement, but I did this and it was fine.   if you
don't have an aux battery my guess is the planned use is low and a Walmart
regular sized vanagon battery is fine.  At $40 bucks or so, you could go
thru 4 of these for the cost of an optima, and the battery fits under the
driver seat in the normally upright position.  If it doesn't get drained
empty regularly, it will last fine and keep your starting battery from
getting drained.  I never drained the starting battery running the few
things I kept on it, like radio and lights (I hooked up a bigger light to
the aux battery and wired new things like inverter to the aux battery.   I
also never drained the aux battery because I usually drive somewhere at
least once a day.  I hooked by fridge to the aux battery and was able to let
it run on 12V for short stops at stores etc which was a lot easier than
switching to LP at stops.

The relay under the driver seat can be used to easily set up the aux
battery.  I have to look at the terminals again though to recall what goes
where.

>From: Larry Hinshaw <LHinshaw@EARTHLINK.NET>
>Reply-To: Larry Hinshaw <LHinshaw@EARTHLINK.NET>
>To: vanagon@GERRY.VANAGON.COM
>Subject: Auxiliary battery for 89 Westy
>Date: Tue, 27 Mar 2007 17:17:31 -0400
>
>What size deep cycle battery do you recommend for the Auxiliary Battery?
>Does anyone have have a "how to"
>instructions for connecting it up inline with the starter battery?
>
>
>Larry - Charlotte, NC
>89 Westy - Gypsy Rose

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