The GPZ 900R's sidestand switch is an integral and very important part of the ignition system and should it fail, you run the risk of being left at the side of the road.
This is an emergency bypass connector for the sidestand switch in the event of it failing. Simply unplug the defective sidestand switch and plug in this connector, this will then provide an earth for the CDI unit. It can also be used as a diagnostic aid to isolate the sidestand switch if it is suspected of causing a misfire or irregular running.
It is highly recommended to supplement your underseat tool-kit and is intended to be used as an emergency, "get you home" measure.
SAFETY WARNING- The sidestand warning light does not work whilst this is fitted.