Gear indicator

[Fazerider]

http://www.angelfire.com/wa3/r.miklos/sh...icator.htm

The ZX12 has the advantage of a rotary switch on the selector drum, the FZS600 only has a neutral switch.
To work out what gear you're in you'd need to calculate it from the ratio of engine revs to pulse rate from the speedo sender... presumably that's how the Healtech unit works, but I guess it'll be confused when the clutch is pulled.