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 & 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 circuit's maximum amperage is less than 5 amps, or if you are unsure, add our plug-n-play harness to draw power directly from your battery. A standard relay is also required and is not included with the horn harness. 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 Fitment Notes: Add our BMW wiring adapter ( DNL.WHS.10100 ) for plug-and-play installation on BMW motorcycles. If the original horn does not have blade-style electrical connections, its connector must be removed and replaced with female spade connectors to connect to the SoundBomb Mini. Harley-Davidson Pan America and KTM 1190 and 1290 motorcycles require a horn wiring harness and relay, purchased and installed separately. The position of the spade connectors on the horn may differ from the product photos and installation instructions. Instruction Manual