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Chesapeake Black 4" Tachometer - 6000 RPM (Gas) (Inboard & I/O)
Fits standard hole for Faria's 4" gauges
contoured white pointer and domed glass lens
and GPS information for popular apps such as Navionics
the pulses are then electronically converted to a speed reading very much like a tachometer converts ignition pulses to RPM
Faria Euro Black 4" Tachometer w/Systemcheck 7000 RPM (Gas) f/ Johnson / Evinrude Outboard) [32850] Restricted From 3rd Party Platforms Chesapeake Black 4" Tachometer -Euro Black 4" Tachometer w Systemcheck 7000 RPM (Gas) f Johnson Evinrude Outboard) Perimeter lighted Black dial with bold White graphics, Black aluminum bezel, contoured White pointer and flat glass lens. Electronic tachometers work by counting pulses generated by the ingition system, alternator, tach signal generator or magnetic pickup sender. The tach is hooked up to +12VDC, Ground and one of the signal sources listed above. By selecting the right