At 113 decibels, the distinct low-tone sound from the DENALI SoundBomb Mini Motorcycle Horn is twice as loud as a typical 100- decibel disc horn. Designed to be a direct Plug and Play upgrade from your factory horn, requiring no additional relay or wiring harness as long as the original horn has blade-style electrical connections and can handle the 5 amp load. When stock isn't quite enough, be heard with the SoundBomb Mini. Some motorcycle horn circuits are not capable of powering this 5 amp horn. If your horn circuits' max amperage is less than 5 amps, or if you are unsure, simply add the plug-n-play harness to bypass the horn circuit and draw power directly from your battery. Also, add a standard relay as this is not included with the horn harnesses. Product Specs: 113 Decibels at 3 feet. Operating voltage:12 Volts (11.7 volts required). Power draw: 5 Amps Single piece design Dimensions: Approximately 3.25" x 3.4" x 2.5" Stylish all-black design. Fits in most factory horn locations. Kit Contents: Single-piece electromagnetic horn. Mounting hardware. Fully illustrated Installation instructions.