Denali Sound Bomb Compact Dual-Tone Air Horn The Denali Sound Bomb is eight times louder than a standard motorcycle horn! At 120 decibels, cagers of all shapes and sizes will jump out of your way! The unique design of the Denali compact horn features a rugged molded clamp that mechanically mates the compressor to the acoustic unit. This makes the SoundBomb virtually indestructible even in high vibration applications. Features: Current Draw: 20 Amp Dimensions: 5.4 (137mm) wide x 4.5 (116mm) high x 3.6 (86 mm) deep Includes 12 volt (30 amp) relay Note : Image of horn installed to bike for reference only. Some models may require the Plug-N-Play Wiring Harness For Dual-Tone Airhorns (sold separately.) Mounting bracket sold separately. The Installation (pdf) calls for a 30 Amp fuse, however only a 20 Amp fuse is required.