What year Jetta?  Assuming it is an OBD1 or OBD2 Jetta III you can get this
signal from the back of the speedometer where the cruise control usually
plugs in.  It just needs a pulsed signal from a reed switch.  You can leave
it disconnected and it will still work - the problem is that the VAG 1551/2
will squeal on you.

David Marshall

Fast Forward Automotive Inc.
4356 Quesnel Hixon Road
Quesnel BC Canada  V2J 6Z3

http://www.fastforward.ca    mailto:sales@fastforward.ca
Phone: (250) 992 7775        FAX: (250) 992 1160

- Vanagon Accessories and Engine Conversions
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-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com]On Behalf
Of Gilles H Turmel
Sent: September 21, 2002 7:46 AM
To: vanagon@GERRY.VANAGON.COM
Subject: I4 conversion speed sensor issue

Hi,
I need some information on how to provide to the Jetta ECU the speed
information its needs.  Anyone has that information?
Best regards.