you will have the grind/file relief in the bottom housing so the wires can get out of the switch unless your bars have the holes for the wire to to pass through. also you will need to either dill hole for the locating pin in the top housing to mount to the bars, or remove the pin with pliers or vice grips.
you may also find that now your clutch and brake line are now too long, as well as your throttle cables. Be careful that the throttle cables dont hit the tank when you mount them, trust me the can take paint off....
otherwise there are about a million ppl on ere that have them , and probably the odd thread regarding them.
good lukc and post some pics when done...
peace