While riding today my horn just started blowing. Didn't push the button it just started and the only way to stop it was to pull one of the wires off. Hated to do that but could not ride all the way home with a blaring horn. Checked the switch and it doesn't appear to be sticking. Fuse isn't the problem. Soon as I reconnect the wire it starts blowing. Suggestions? Also it's an 06 vulcan 1600.