This product requires an Onboard Air System Single trumpet, metal chrome plated air horn, Sound Output: 145 dB @ 150 psi Amber Light built-in into the front weather protection cover 12V Electric Air Valve (solenoid) with Compression Fitting 3/8 inch OD Nylon Plastic Hose (10 Feet)

This chrome look trumpet produces a loud powerful sound. Constructed of metal to ensure maximum strength and durability with a front pedestal that eliminates vibration at high speeds or on rough roads. The front of the trumpet is equipped with an amber light which can be wired to turn on with your vehicle's running lights or every time the horn is activated. Horn comes with a 12V solenoid, weather protection cover, hose and mounting hardware. An on-board air system is required for operation. Ideal for semi-trucks, and all vehicles with a 12V system. Semi Truck Air Horn (Chrome Plated) with Amber Light Metal Construction Amber Light Built-in Into The Front Weather Protection Cover 12V Electric Air Valve (Solenoid) with Compression Fitting 3/8" OD Nylon Plastic Hose (10 Feet) Mounting Hardware: Bolts, nuts, washers, mounting gaskets Dimensions: Horn: 24-½" L x 5-½" H Opening: 7-½" W x 4" H Note: Onboard Air System Required