The horn itself is mounted under the right side fairing at the front of the bike.
Because it is so light you can easily attach it to the side fairing by using zap straps. Cut the extra sections of the old bracket on the horn off with a saw. Leave enough of a ledge so that you can drill a hole in each corner that is large enough to run a zap strap though.
Use automotive cable tie mounting bases (they attach with very strong double sided foam tape) to mount the horn. It should mount very tight so that it cannot move at all. When you put the top fairing piece back in place the horn is now completely hidden.
