S/R just told me that the B/G switch comes with all their stuff. I suppose I did get the correct style and the Blue/green switch is just ignored.

I might try the install this weekend, but I would hate to run into trouble. I don't know how I'm going to slip on that whole big piece (the gauges are one piece) over all 4 needles without messing something up... But I'll probably give it a shot anyway.