1500 horns were sick, they were very low sounding, you can access the horn and it has an adjustment on it, or take it off and go to Pep Boys and get a loud horn that will fit, or better yet, get some air horns like many with 1500's have done, The 1800 Gold Wing has very loud horns but I don't know if the would fit in the place where the 1500 horns mount.