This uses a 12V battery source. To connect it, a solenoid, part #5000-1, is required. If an air source is not available, a compressor, part #5055, is also required. These parts are available directly through the manufacturer. It uses 1/4" tubing to the air horn from the air source.
Roadmaster Truck Roof-Mount Air Horn with Support Arm, 130 Decibels, Chrome, Model# 5040

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- Chrome plating to prevent corrosion
- Internal intake that does not show any hoses or connections
- Support arm that allows a firm mount and helps absorb vibration
- 130 decibels and 230 Hertz at 100PSI.
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