Troy Delnicki typed:

<snip>

> I guess an alternative would be to mount two of them in front of the sink
> or other location, and then use a DPDT switch to go between the two.
> Keeping an eye on both batteries to me is really important. Generally when
> one battery starts to go, it draws from the good battery, and you end up
> killing both.

Hi Troy,

The aux battery will not draw on the starter relay if your Vanagon is
wired so that the two battery automatically disconnect from each other
when charging current is not available (relay or other method). On the
other hand, if the batteries are always connected together, their two
voltages will be identical unless the wire connecting them is a very
poor wire. In that case, a switch will be unnecessary.

--
Mike "Rocket J Squirrel" Elliott
71 Type 2: the Wonderbus
84 Westfalia: Mellow Yellow ("The Electrical Banana")
74 Utility Trailer. Ladybug Trailer, Inc., San Juan Capistrano
KG6RCR