Compgeke wrote: Neutral switch is probably just a dirty\flakey switch like it is on my KZ550. It only works 30% of the time, and even then maybe not until you give the thing a good whack. Some Day(tm) I might rip the thing down and see if I can fix it but it's not been high priority.
With brake lights, dig up a multimeter and wiring diagram and start seeing if you have voltage to the back. I might have the wrong diagram here but it looks like you should have running voltage on the following:
Blue: +12V (give or take depending on alternator\battery charge)
Black w/ Yellow Stroke: Ground
Red: Brake Light +12V. Should get voltage on this whenever one of the brake levers are pressed.
A copy of the service manual can be found
here
.
