I bought this thinking it would be an easy fit as described. It took a factory trained Kawasaki main deal mechanic two hours to fit this to my Kawasaki GTR1400 which has a large spacious fairing.
He has to make a wiring harness and new brackets to fit it. It cost me over £100 to fit a £45 horn. In the end it went in and sounds pretty sound.
If you buy this then buy with caution and do not expect it to fit easily. Buy with caution.