I believe what you are looking for is an unregulated output terminal from
the alternator, and unfortunately the Vanagon alternator does not have this
output as the regulator is built in to the alternator. I was looking at an
"intelligent charger" that required an unregulated output and was told that
I could modify the Vanagon alternator by removing the diodes and making a
couple of internal connections. However, this isn't a good solution as it
leaves you without a charging system for the main battery (actually no 12V
to run the van on either!)

-Mark McCulley

At 04:36 PM 4/1/98 -0500, Karl F. Bloss wrote:
>I searched the archives on this, but didn't see anything conclusive:
>
>I now have this wonderful isolator that says if you have a Motorola
>alternator with "auxiliary terminal" that you basically take the
>output from that (without unhooking anything else), run it through
>the isolator and into the aux. battery.
>
>So, the question is: does the '87 alternator have an auxiliary
>terminal?  I presume it's a Motorola.  If it does, which one is it?
>The little screw on the left front that has nothing hooked up to it?
>Bentley is not real clear on this either; they just tell you how to
>take it apart.
>
>Plan B is to bag all that stuff and use the alternator output like
>everyone else seems to have done.
>
>Thanks,
>
>-Karl
>Karl and Kristina Bloss, Trexlertown, PA
>'87 GL Weekender  "Beverley"
>VW shop list: http://www.enter.net/~bloss/vw/vwshops
>