For the various connections, I provided a trace from it's ECM connector and out to various other connectors on the car. If you are looking for the tach signal line, you can grab one from inside the passenger cabin. If you look behind the kick panel on the passenger side, you will see the EPS Control Unit as shown in the below PIC.
The grey connector in the center is what is called "Connector D." Pin number 3 on this connector (towards the right in the above PIC...two pins away on the same row where the white wire is located) has a solid blue wire running to it that needs to be tapped to get the tach signal.