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Subject:"W" pin on alternator? What for?
From:Paul A. Cianciolo
Date:Sat, 18 Sep 1999 10:03:24 -0400

Hello Folks,
Finishing up the 1.9TD in my Vanagon..  Actually got to drive a mile or so
today.  Man !! you can really fell when the turbo kicks in

Lots more work to do yet.  I am not charging properly at this time.  There
is a "W" pin at the back of the Motorola 50 amp alternator.
With the Alt. connected tot eh battery properly, the alt will not charge the
battery.  How ever if I apply battery voltage to the "W" pin for 1 second
or so the alt. will charge ok.

I ihave heard that this pin is used for a tachometer input in the Diesel
cars. Is this so or does it need to get a quick pulse of battery voltage to
turn on the regulator circuit in the alt.

Bentley is of no help... I also checked some of my earlier Rabbit books

Thank you

Paulc
W1VLF
Cloudbounce Webpage  http://www.qsl.net/w1vlf/

1986 Vanagon Gas
1982 Vanagon Diesel  Soon to be Turbo Diesel 1.9

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