This horn is SO courteous my car was granted Canadian citizenship yesterday. Check out Bob's video: https://www.youtube.com/watch?v=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=1 Buttons: https://www.amazon.com/gp/product/B0144DKLW0/ref=oh_aui_search_detailpage?ie=UTF8&psc=1 Amp: https://www.amazon.com/gp/product/B01IMRXPFY/ref=oh_aui_search_detailpage?ie=UTF8&psc=1 PA Speaker: https://www.amazon.com/gp/product/B002KO63X2/ref=oh_aui_search_detailpage?ie=UTF8&psc=1 12V to 5V: https://www.amazon.com/gp/product/B00U2DGKOK/ref=oh_aui_search_detailpage?ie=UTF8&psc=1 Train Horn (not my exact version but this will work well): https://www.amazon.com/Wolo-847-858-Siberian-Express-Train/dp/B01DDCSOPE/ref=sr_1_4?ie=UTF8&qid=1497644803&sr=8-4&keywords=wolo+train+horn http://wolo-mfg.com/horns/truck-horns/model-805-challenger.html Less expensive version: https://www.amazon.com/Zone-Tech-Dual-Trumpet-Horn/dp/B00W81EAE6/ref=sr_1_2?ie=UTF8&qid=1497473330&sr=8-2&keywords=truck+horn **LINKS FIXED** Courtesy Honk WAV file: https://www.dropbox.com/s/joob9j13g1dgasc/CourtesyHonk.wav?dl=0 R2D2 WAV file: https://www.dropbox.com/s/233yzjket8pyuya/R2D2.wav?dl=0 MUSIC- 0:27- Ceral Killa- Blue Wednesday - https://soundcloud.com/bluewednesday/ 2:18- Berlin- Andrew Applepie- http://andrewapplepie.com/ 3:20- Dance- Danijel Zambo- https://soundcloud.com/danijel-zambo 4:38- Special song written just fo my bad self- Lincoln Hoppe, http://lincolnhoppe.com/ 5:33- Too Happy to be cool by Notebreak- https://soundcloud.com/notebreak/dubstep-too-happy-to-be-cool Summary: I customized my car horn to play three different sounds. The main sound is the "Courtesy Honk" which is used to get the attention of other drivers in a non-emergency scenario. It's two quick chirps of the horn that is not only friendly sounding, but it's not as loud as a normal car horn. PLEASE CONSIDER SUBSCRIBING: http://tinyurl.com/MarkRober-Sub ****************************************­ I make videos like this once a month all year long while supplies last: CHECK OUT MY CHANNEL: http://tinyurl.com/MarkRober-YouTube FACEBOOK: https://www.facebook.com/MarkRoberYouTube TWITTER: https://twitter.com/#!/MarkRober INSTAGRAM: https://www.instagram.com/markrober/