Just go to your nearest auto parts store (O'Reilly's, Advantage, Auto Zone, etc...) and buy a car replacement horn for approx. $14 USD. They bolt up right where the stock horn is and do the job. After I replaced mine, I went for a ride and came up next to a car who thought he was going to come over in my lane when I was still there. I let loose with a quick blast, and his head jerked around like I'd stung him. The look on his face was priceless.
