Kleinn Chrome Roof Mount Single Horn/ 22.75In - Chrome-Plated Spun Copper

The Model 412 roof mounted horn features square trumpet openings and covers to keep anything the road throws at you - out of your horns. Loud and deep over the road truck sound. Roof Mount Air Horn Fittings Kit required for installation (P/N 330). Manual valve or electric solenoid valve not included.
Installation Instructions
Installation Instructions