This horn is SO courteous my car was granted Canadian citizenship yesterday. FREE Audio Book- http://bit.ly/AudibleMarkRober A review of all the books I've listened to recently: http://bit.ly/MarksAudioBooks Check out Bob's video: https://youtu.be/smhMLsP5fsM My buddy Howard does this for a living: https://www.yelp.com/biz/caracoustics-santa-clara Links to the stuff I used (not sponsored): Sound board: https://www.amazon.com/gp/product/B00Q3U42DM/ref=oh_aui_search_detailpage?ie=UTF8&psc