G'day All. I fitted this the other night and thought I'd share it. I'll be trialing it over the coming weeks. It's for those situations where my motorcyclist's sixth sense tells me that the fool up ahead is about to pull a SMIDSY. This is a Thunder Horn, which can be got on eBay for about $15. It emits 115db. I travel everyday through one of Melbourne's worst streets when it comes to driver inattention and incompetence. The concept of this horn is to get the attention of a driver when I fear they may be about to pull a SMIDSY maneuver on me. A vehicle's horn is meant to be a signal to other road users, but often it has degenerated into an expression of aggression. When people perceive aggression they become defensive, which in turn translates into aggression for some. That's not good either, when you're vulnerable on a motorcycle and there are so many people out there with anger management issues. The purpose of this Thunder Horn is to get people's notice without any negative interpretation on their part. I just want them to see that I'm there, and so not pull a SMIDSY on me. Hence I searched for something possessing a different sound to a standard horn, but with no similarity to an emergency siren. My assumption in fitting this horn is that people will simply look in my direction, confused at what the sound is. And if in doing so they see me, then the horn's work is done. If the idea works then I'll eventually look at fitting it into the bike's electrical system - at the moment it runs on a 9V battery. One difficulty is that I can't fit the horn button to the switch block, which means I have to reach to a button on the bars. I have ordered a big button that I can stab at. And the horn will have to be used in advance enough that I can be back in position for an emergency maneuver. Which is fine - I still have my main horn; this secondary horn is simply for using in advance, where I perceive an inattentive driver and a potential hazard. But I'll look in time to positioning the button so I don't have to move my hand. Also I'm still playing with positions for the horn. I think it would be better if the speaker faced forward.