Oil pressure switch for brake light.
Available in "bolt" or "banjo" type, depending on your machine.

Part#	Price
#Banjo D45-71-291 [M10-1.25] (Japanese - rear brake)	$14.95
#Banjo D45-71-292 [M10-1.00] (Euro - rear brake)	$14.95
#Bolt D45-71-281 [M10-1.25] (Japanese - front brake)	$14.95
#Bolt D45-71-282 [M10-1.00] (Euro - front brake)	$14.95