Designed to be a direct Plug & Play upgrade from your factory horn, requiring no additional relay or wiring harness. When stock isn't quite enough, be heard with the SoundBomb Mini. Compatible with all CANbus electrical systems. Specifications: Sound Output: 113 dB at 3 feet Current Draw: 5 Amp Dimensions: 3.25"(82mm) x 3.4"(86mm) x 2.5"(63mm) Stylish All Black Design CANbus compatible Included: Single Piece Electromagnetic Horn Fully illustrated installation instructions