[Darren69]

Be careful when you remove the levers because of part of Part #5 which if yours are the first type it will drop out and you'll probably lose it. It's a little black plastic spacer that sits between the micro switch and the lever and is only held in place by the lever itself. Without it your brake light or clutch interlock won't work.

Looks like you would need to buy the complete micro switch in order to get a new one.