well after many hours of deliberation and hming and hawing along with many busting my chops on this airhorn subject, logically thinking about this. i will no longer be installing them on my boat. so, your asking yourselves this question now "what is he going to do with the airhorns:? well you see . the story goes a lil like this..... back about 4 years ago i picked me up a daymak road warrior. . ok so now you ask me , What is a daymak road warrior? as the story goes on , the daymak road warrior is an all terrain street legal ebike. can you see where i am heading with this story? anyways. the existing horn really sucks . so i plan on installing this unit into it. as for a boat horn i will buy a few hand held air canisters. thank you all for the replies and knowledge and for bustin my chops. lol..... so now your asking, what does this bike look like. well here it is. mind you this is the stock photo. i have mine modded out with a few things. but untill the airhorn is affixed i wont show it. mine does not have the mufflers. and i also installed bush lights. and a led scrolling msg plate.