Installing my system (N4) now and am pretty sure I found the VSS wire without problem.

If I want to check to be sure I have the right wire how can I check it with my multimeter? I have a good Fluke and know how to use it. Not sure what type of variable input I'm looking for. Is it 0-20ma, 0-10v, or what?

i believe you put it on ac (alternating curent) and as you hit the gas on the multimeter it should go up and down as you hit the gas.

AC might work. Didn't think of that when I did mine.

I did mine on DC. Put the car in neutral on a VERY gradual slope. One pin on Ground, other on what I thought was VSS. As I let the car slowly roll forward, the voltage went from 0 to 5v to 0 to 5v back and forth. This is consistent with the trigger mechanism in the VSS circuitry. Worked correctly upon install.

AC might work. Didn't think of that when I did mine.

 

I did mine on DC. Put the car in neutral on a VERY gradual slope. One pin on Ground, other on what I thought was VSS. As I let the car slowly roll forward, the voltage went from 0 to 5v to 0 to 5v back and forth. This is consistent with the trigger mechanism in the VSS circuitry. Worked correctly upon install.

The car must be moving to get a change.

Your VSS will be an AC signal, cycling from + to -. Voltage change can be anywhere from 2-3 volts, to 10-12 volts, depending on the vehicle.