I mounted a SPDT toggle switch behind the drivers seat (next to the little
black fuse box) that lets me switch between main and aux for powering the
'fridge fan and water pump.  It also controls which battery the condition
lights read.  It spends most of its life on 'aux' but it is handy to toggle
over for a quick check of the main battery.

My set-up is a liitle unoorthodox perhaps as I have the aux battery under
the rear seat in a homemade plywood box -- but on the lid of the box are
voltmeters for both aux and main for more exact info.  Suspenders and belt I
guess, but I use both.

Geo Hahn

----- Original Message -----
From: "Jack R." <jack007@COMCAST.NET>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Friday, July 24, 2009 7:57 AM
Subject: Battery condition indicators
>
> I am considering hooking up a second battery condition indicator, and
> secondary float charger for the main battery, and wondered if anyone had a
> recommended solution...