Kleinn Air Horns 1304 illuminated 160-psi dual needle dash panel gauge kit with on/off switch. Monitor the pressure in your air tank using our illuminated dash panel gauge, and easily turn your air system on or off manually. Crafted from heavy-duty, powder-coated steel, the kit includes a quick connect coupler, compression fitting and mounting hardware. Kleinn Air Horns is a U.S. Manufacturer of extremely high quality air horns, train horns, complete onboard air and air horn systems. Our focus is to bring the finest quality Pneumatic systems and components to the automotive aftermarket - worldwide. We are constantly developing new 100% bolt-on, vehicle-specific systems for todays most popular vehicles. Kleinn also carries a complete line of air Compressors, air tanks and related Pneumatic accessories for cars, trucks, SUVs and everything else with a 12- or 24-volt power source.