Well, unless I'm mistaken, that particular buzzer may be overkill. 95Db is a lot, especially at idle. I have no idea if it'll work outdoors. But you get the idea: fairly low current draw, connects across the flasher terminals.
Luke M
Used to have a 1979 CB750L, sold it as a parts bike, now riding a slightly modified 1984 VT700C. Network/Field Engineer. Central OH, USA, Earth, Sol System, Milky Way Galaxy, Universe.