Blitz supercharger switch diagram

[CrankyOldMan]

I'm replacing my selector switch with something more unique/interesting/secure, and in the process have more or less reverse engineered it. Nothing too complicated: just a rotary switch, an LED, and some resistors that make a strange voltage divider, or perhaps mimic set points on a rheostat. The LED is either 12V tolerant or has the power resistor in the clutch controller box. CTScott, can you confirm?

If you're handy with electronics, you could come up with some variants of your own. I'm eliminating the 50% and 75% positions since I never use them, but I'm keeping "off" for the young drivers in my family that are learning to drive.