Hi,

I had this problem with my bike.
Eventually found the pin had slipped into the switch shaft enough to not locate in the selector shaft slot.
Once I sorted the pin, I found the neutral position (if I remember correctly) by holding the switch against the engine case whilst turning the switch shaft slowly & watching the neutral light.
I`d checked the bulb was ok first.
Once I found the right position, made sure the bike was in neutral & refitted the switch.
Works a treat now.