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how to wire a fuel level gauge
How the fuel gauge works:
Today's vehicles generally have a fuel pump in the fuel tank, which is controlled by the computer to extract the fuel and transport the fuel to the engine.A float will be installed on this fuel pump. The float itself is connected to a sliding resistor. By the float floating up and down in the gasoline, the change of the liquid level causes the resistance to change, so that different electrical signals will be transmitted to the engine. computer.Finally, after the calculation of the computer, confirm the amount of fuel in the fuel tank.It seems that the working principle of the oil gauge is quite scientific, but there are actually many factors that may cause the inaccurate display of the car oil gauge. There are many factors that can affect the display of a car's fuel gauge, such as a float being stuck in a wire in the fuel tank, or a faulty wire that transmits electrical signals from the fuel pump, or a problem with the engine computer.
The sensor is resistive, the red wire goes to the signal and the blue wire goes to the negative. And after the fuel tank is placed, the highest oil level cannot be higher than the base of the diesel generator set by 2.5 meters. If the oil level of the large oil depot is higher than 2.5 meters, a daily fuel tank should be added between the large oil depot and the diesel generator set, so that the oil can be delivered directly. The pressure is not more than 2.5 meters.
Mainly there are two positive and one negative lines on the oil gauge. The positive line must have electricity. The resistance on the oil float is also two lines, one in and one out, and then connected in series with the two lines on the oil meter. , the negative-level line after the series connection must be grounded.
The fuel gauge is generally located directly in front of the driving position of the vehicle, and is located on the same dial as the water temperature, rotational speed, speed and other indicators, each of which is distinguished by a simple icon. The fuel gauge is represented by a rectangular icon.
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