This tacho must be hooked up to the "W" terminal on vehicle alternator. Many diesel engines and most inboard gas boat engine alternator have this connection. It can also be working with speed sensor. MPH SOG COG ODO TRIP Functions In One.
Touch the back buttton of the meter, we can switch the unit:MPH, KPH, KNOTS and save automatically. COG:(Course Over Ground):The moving direction relative to the ground position, showing clockwise direction relative to the north. TRIP:Return zero when off electricity. ODO: Accumulated, and never return zero when off electricity. It can be reset to zero if needed. For details, see individual gauge description at link below. Install Diameter: 52mm/(2-1/16) mounting holes, screw on. Oil Pressure: 10184ohms, 0-145 PSI.Fuel : 240-33 ohm, E - F. If you need other output signals, like 10-180ohms, 0-90ohms ect, Leave me a note.
Water Temperature: 287.4-22.4ohms, 100-250F. (Voltmeter has no black line). Fuel Level Sender:240-33ohms, 6-1/2.
We can DIY the length per your needs, but it will charge you extra funds if you need longer than 6.5inch, Send us a message before you paid. Attention: A minimum 1"clearance must be maintained between the tank bottom and the float retaining collar in a plastic tank and 1/2"clearance in a rigid metal tank. Senders can be used with all gauges brands that have compatible ohms.Water Temperature Sender:287.4-22.4ohms 100-250F. Oil Pressure Sender: 10184ohms, 0-145PSI. Fuel level sender:Brown--Signal Input. 1/8NPT Oil pressure sender:G--Sensor. Signal WK--Alarm(0.8bar) Shell--Ground.
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