> I am not familiar with the VW setup, but my van uses a battery isolator to
> automatically charge each battery when needed.  The isolator acts like a
> diode by preventing current from running back out of the
> batteries into the charging circuit.  My suggestion is to get a battery
isolator
>  ($30+).

The original VW/Westfalia design uses a relay instead of an isolator. When
the key is off, only the aux battery is connected, so the starting battery
cannot be drained.  When you turn the key both batteries are connected, so
that they can both be charged.  We sell a dual battery kit by Hella which is
basically the same as the original VW relay setup. This works with any
Vanagon.  Our part number 1738.  Price is $18.95.

- Ron Salmon
  The Bus Depot, Inc.
  (215) 234-VWVW
  www.busdepot.com

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