That's how ours is setup, except our marine switch also has the option to run/charge both batteries.  That way we can charge BOTH of them while we drive.

Good Luck!!!
Rod Woten 
'87 Westy 
Des Moines, Iowa

-----Original Message-----
From: aircooled chris [mailto:aircooledchris@EUCASAFARI.VENDIOWEB.COM]
Sent: Friday, October 15, 2004 11:33 AM
To: vanagon@GERRY.VANAGON.COM
Subject: [VANAGON] dual battery switch

Would it be ok to use a marine switch to separate two batteries that
would switch everything on your van over to a different battery when needed?

Or would it be bad to actually run the vanagon with everything connected
to the aux battery?

I just figured that while camping, you could use the starter battery to
get you going, but after a night of camping, switch over to the aux
battery during the following day of driving, so you can fully charge it
again before the next night of use?

thanks for any tips!

cr