You might want to take a look at this web page that shows how to convert a BOSCH alternator to an external regulator using a FORD regulator. THe author alleges that the internal regulator in the BOSH alternators are known for getting 'lazy'  and lowering the voltage output.

http://www.geocities.com/MotorCity/4242/alternator_ext-reg.html

Todd
'88 Westy

David Marshall wrote:

They are internal - although I have been experimenting with external mounted next to the battery for less voltage loss. 


David Marshall

Fast Forward Autobahn Sport Tuning
4356 Quesnel Hixon Road
Quesnel BC Canada  V2J 6Z3
mailto:info@fastforward.ca      http://www.fastforward.ca
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-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com]On Behalf Of patty and danny
Sent: March 16, 2001 5:49 PM
To: vanagon@GERRY.VANAGON.COM
Subject: voltage regulator
 
A stupid question from a true beginner, on an '81 aircooled vanagon is the voltage regulator alternator mounted or external mounted? Thanks,Danny'81 Westy