964 Pulse Sensor Wiring details required
 

I am working towards hooking up a 964 pulse sensor on a 3.6 motor to Megasquirt MS3X but I can't quite figure out what each pin in the sensor connector is for.
Just to complicate this, the factory manual doesn't show a connector between the sensor and the DME, so I assume the numbers on the sensor in the diagram are same as pin numbers.
The wiring diagram shows that the sensor has two shielded wires, one brown to DME 48, one white to DME 47. The sheild is grounded at [3] near the DME.

What I need to know is what signal or voltage do each of these wires carry.
Anyone know more about this than me? :confused:

http://forums.pelicanparts.com/uploa...1310471870.jpg

Bump at lunchtime (for me at least).