p strong Euro Black 4 Tachometer - 4 000 RPM Diesel - Mechanical Takeoff amp Var Ratio Alt 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 ignition system alternator tach signal generator or magnetic pickup sender The tach is hooked up to 12VDC Ground and one of the signal sources listed p p By selecting the right tach 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 p p 4 - Hole size 3 375 85mm p p strong Specifications strong p ul li Anti-scratch glass lens li li 12 VDC negative ground li li Can be adapted for 24 VDC systems li ul p Factory P N TD9122 p --- cis2 mmxtmJVt --- br
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