What bike did you have? I have an SV650N, I'm on sv650.org and someone on there says it fits and works perfectly with the existing relay. Perhaps you needed a new relay with yours? (apart from it not fitting on your bike, obviously!). if your bike is your avatar (gsxf) then there are loads of places to put the horn, just need longer wires and i'd add a relay to take power from the battery.. on my gsx750 naked its going under the tank, but the old ones will stay for looks.. if its your zeff, then under the tank.. Yeah it was on the GSXF....I've given up on it now anyway, I'd like to think the stock horn out in the open would be louder than something hidden under the tank anyway, but if not at least I haven't wasted three hours installing a horn!