MPC M1 (0933) 3-Trumpet Train Air Horn Kit, 110 psi Air System, 150dB+, Metal Chrome Compact Triple Air Horn (Dimensions: 13.75"L x 7"W x 6.5"H) w/ 12v Electronic Solenoid All-in-one Air System w/ 110 PSI Compressor & 3 Liter Air Tank (Dimensions: 15.75" L x 5.25" W x 6.0" H) Kit includes a pressure switch (85 PSI on/105 PSI off), 12 ft of 1/4" air line, push button switch Wiring kit: 12 feet of 10 gauge power wire, 15 feet of 20 gauge power wire, 20 amp fuse and fuse holder, Assorted crimps and wire connectors, Zip ties The compressor in this kit MUST be installed in a clean and dry location