12 Volt (engine must be running during use).
Viair 100C Silver Truck Mount Air Compressor for Train Horns - 12 Volt, 130 PSI
VIAIR 100C Truck Mount Air Compressor with Omega-Style Bracket - 12 Volt
VIAIR 130PSI 1.27CFM 100 Series 100C 12V Compressor Universal Fit 10014
VIAIR 325C Silver Fast Fill Truck Mount Air Compressor for Train Horns - 150 PSI
VIAIR 92C Silver Light Duty Compressor with Air Filter for Motorcycle - 12 Volt
Viair 95C Silver Light Duty Air Compressor for Motorcycle w/ Omega Bracket - 12V
