VSS Sensor

Hello, I have a 1998 Mercury Sable GS, 3.0L V6 and I want to know where is the Variable Speed Sensor (VSS) located? Does anyone have a picture or a detailed description for me? Thank you.

It is mounted on the transmission. Here is a link to a picture of it (and other sensors too)...

http://fordfuelinjection.com/?p=10