IIRC that left side (rear) Brake / Start switch is the same part # as used on the NSS250 Reflex, PS250 Big Ruckus, and our (North American) NSS300 Forza.
Once Upon a Time…After discovering that I had no brake lights I found that both brake light switches had failed —though presumably not at the same time. I soon came to the frightful realization that, not only was there no rear lights, but that I was also a hair’s breath away from being unable to Start my Silverwing. Fortunately I discovered that the front (right) switch had a loose wire connection. So the “No Brake Lights” problem was partially resolved. It seems that when
someone reconnected those switch wires, instead of
on the terminal it was only pushed
between the wire terminal insulator and the switch male terminal. Eventually it dislodged, and with the left side switch having actually failed, left me without brake lights. A new Brake/Start switch for the left side was put on order and in the interim I made up a jumper wire for the Start terminals of that left side switch. The Start switch terminals are the larger of the two sets of terminals on that tiny switch.
And they lived happily ever after…
PS: Since then I’ve kept a spare Brake/Start switch in the bike. Just in case.