PRODUCT DESCRIPTION Faria Beede offers a comprehensive line of marine gauge styles to fit your boat or upgrade needs. FARIA KRONOS 4″ TACHOMETER 6000 RPM GAS INBOARD & I/O Manufacturer’s Part Number: 39004 Kronos 4″ Tachometer – 6,000 RPM Gas – Inboard & I/O 4″ – Hole size: 3.375″ 85mm Electronic tachometers work by counting pulses generated by the ignition system, alternator, tachometer signal generator or magnetic pickup sender. The tachometer is hooked up to +12VDC, Ground and one of the signal sources listed above. By selecting the right tachometer and setting the switch on the back to the correct position you let the tachometer know how many pulses are sent per each engine revolution. Benefits: Wide range of scales Multiple signal sources Rugged, Reliable construction Disclaimer: Descriptions and pictures are provided by the manufacturer and may be used for multiple variations or parts.
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