I was going down a particularly nasty trail, more like a rocky river bed at Carnegie yesterday. It looked like a garage sale...plastic parts all over. Well, I came across a little horn. That got me to thinking about how, when I want to stop and talk to someone, like my son, who's in front of me on a single track, it's real hard to get their attention. So, the question is, is the yz426f putting out any constant voltage that would power the horn? This horn doesn't take much. My son honked it with a 9 volt battery.