How does the ignition advance work?

[His Dudeness]

The wires are as follows on the Sensors:
L/Y is the positive feed
W is the signal output to the Ignitor, the Speedo and Odometer from the Speed sensor
B/L is the earth fed from the ignitor.
W/R is the signal output to the ignitor from the pick-up
Y is the signal output from the TPs to the ignitor
L is power from the ignitor
Speed sensor pulses over either 12mph (20 Kph) are not used by the ignitor as all timing timing above that road speed is controled by the TPS angle and engine speed.

Good man Unfazed This has sparked my interest in automotive electronics. I'm going to keep learning about it. I think the aul Fazer is a good starting point because there's only a few components in the circuit and once you understand them you have the basics and you can go on and get into the more complicated circuits in fuel injection and learn how they work. Bikes are feckin great. Best thing I ever got into Thanks for everyone's input Hopefully this thread helps someone else too