I have a VSS for my 02 wrx 5mt. There are three wires. From left to right, Green/White, Brown/White, Green/Black. So which one is the 12v constant, signal, and ground? Please help me identify these.

I checked the wiring diagram for 02 wrx and I don't have the Green/Yellow that goes to the signal and B/R that goes to ground. So which one should I expect?

The Green/White is a thicker gauge. The other two wires are smaller gauge.

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http://www.msu.edu/~cheungal/DSCF2327.JPG