p strong Tachometer Heavy-Duty Tachometer with Hourmeter 4000 RPM Diesel Mech Takeoff amp Var Ratio Alt - Black strong p p Perimeter-lighted black dial with bold white graphics black aluminum bezel contoured white pointer and flat glass lens p p 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 p p By selecting the right tach and setting the switch on the back to the correct postion you let the tachometer know how many pulses are sent per each engine revolution p p strong Benefits strong p ul li Wide range of scales li li Multiple signal sources li li Rugged Reliable construction li ul --- cis2 mmxtmJVt --- br
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