Javier,

Your battery arrangement sounds different from my 'factory' set-up.  In my '85 the auxiliary battery powers the usual auxiliary stuff and the other runs the starter and other 'car' stuff.  The alterator charges both batteries.  What you may want to do is get one of the Hella auxiliary battery kits or look in Bentley for the proper wiring to get your auxiliary hooked to the alternator.

Chuck
'85 Wolfsburg Westy

In a message dated Tue, 16 Jan 2001  8:27:56 AM Eastern Standard Time, Javier Zavala <zavlomja@EC-RED.COM> writes:

<< My batteries are not hooked together, one works with the engine and
alternator, the other one works for the sink, lights, fridge, etc, and it
charges from an external source (plug) thru a charger that fits under the
rear seat.

Javier Zavala
84 1,9L German  Westy
01 Prospector Hovercraft
 >>