Description:Tachometer and Fuel Gauge combined into one.Bright LED reads out, easy viewing at all angles during lighting conditions.Red=Positive, Black=Negtive, Green=Tachometer Signal, Yellow=Oil SignalTachometer installation and debugging way:Connect the positive and negative pole to power supply correctly.Turn on the electric door switch, tachometer will display to 0, and then let the signal line touch the positive pole of power supply. If the digital display changes, it can work normally.Connect the signal cable, start the Motorcycle, and then it can display speed.Fuel gauge installation and debugging ways:Connect the positive and negative pole to power supply correctly.Turn on the electric door switch, fuel gauge displays a grid of red, and then connected signal line to the negative pole.
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