The wire colours should be the same. It was the Brown & Black/Yellow for the steering buttons in the WH and VY.
The VX wiring should be the same as the WH Stato (don't worry about the GTO link I posted earlier). Use version #9.
Wiring
Factory loom 'Brown' wire to the SWI-PS 'White' wire
Make sure you ground the Factory loom 'Black/Yellow' wire.
SWI-PS 'Red' to switched +12volts
SWI-PS 'Black' to ground (same as Black/Yellow)
If you have no luck with the version number/programming, take resistance readings between the Brown and Black/Yellow wire (press different control buttons for different resistances) and post them here. We may have to work out another version for you to program.
You should not have any problems with the version #9, you can try version #3 but I doubt that would work.