I saw this on another forum..
If you donate a little something, you get the horn for $79...
It allows for a stock horn beep...
Or a LIGHTS FLASHING, LOUD BLAST
New Horn (http://www.indiegogo.com/PlugAndPlayScreamer?contribution_success=true&pledge_id=1290284)
Cool idea but I would want a second button for the normal beep not wasting a second on the normal beep to move to the banshee scream. To me it looks like the bad boy that Terry has. I have not got one yet but will be looking into it. My stock horn is loud but want a louder horn.
The dual Fiamms that I installed on Scott's bike are pretty decent for under $50 including a relay, fuse, and 20 minutes of wiring.