I bought one of those and spent half a day trying to find a place to mount it. Space is a premium under the cowl, and I just could not get it to work. Problem is, it must be mounted in a near vertical position, and it is fairly long for the space we have to work with. No matter how I tried to get it to fit, I would either have interference when the bars are turned lock-to-lock, or I was too close to the fender and wasn't sure I would have enough clearance if the forks bottomed out. Since I had already installed a relay for the air horn, I went ahead and used two highway blasters (hi & low) instead.