VAG hall senders are usually marked on the black plug.
You will see "+" and "-".  The third pin is the output signal, usually in
the middle.

-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of
Thewestyman
Sent: Friday, May 31, 2013 7:59 PM
To: vanagon@GERRY.VANAGON.COM
Subject: Which is the ground for the Hall sender?

As the headline says.  I know, I can spend a couple of hours to find it in
Bentley, but if one knows it right away, that would be way faster.
Thanks to all.
Zoltan