Karl:
Auto parts stores sell a device for such occasions. It consists of a plug
that fits in your ciggy lighter and a nine volt battery. It is enough
current to keep your memory alive but not enough to fry any wires in case
of a short. 
Ironicaly the digifant computer is not sophisticated enough to care, but
the radio is.

Drive Safely
Ken Lewis
86 VW Transporter Three Door Pickup
60 Porsche T-5 Coupe

On Fri, 27 Jun 1997 16:19:01 -0500 "Karl Bloss" <blosskf@ttown.apci.com>
writes:
>I know I'll lose the clock and radio station settings when removing 
>the ground strap from the battery.  Anything else I should be 
>concerned about?  Performance stuff from the digital elephant, uh 
>Digifant?  Presumably there's stuff in ROM somewhere for just such an 
>occasion.
>
>-Karl
>Karl F. Bloss - blosskf@ttown.apci.com
>'87 Vanagon GL Weekender "Beverley"
>http://www.enter.net/~bloss/vw/
>