Jim,

But even if the alternator is charging, how does that prevent the starting
battery from attempting to equalize with the aux battery and therefore
nullify the effect of the alternator on the starting battery or even worse,
begin to draw the starting battery down beyond the output of the alternator
which is trying to charge both batteries as one?

Jeff

-----Original Message-----
From: Jim Arnott [mailto:jrasite@eoni.com]
Sent: Thursday, December 13, 2001 11:35 AM
To: Warner, Jeff (DSIO-MS)
Cc: vanagon@GERRY.VANAGON.COM
Subject: Re: Battery Isolators vs. Relays

The way you solve the draindown problem is to connect the relay
actuation circuit to the alternator idiot light circuit.  That way the
relay doesn't close until the alternator is charging.

Jim