What are the three wires of the fuel level sender?

[LeDaniel]

The three wires of the fuel level sender are the fuel level sensor wire, the fuel gauge ground wire, and the low fuel sensor wire. Below is a related introduction to the fuel level sender: 1. Function: Many people mistakenly think that the fuel level sender is damaged when it gets stuck, but in fact, it is just because the linkage between the fuel level sensor and the float gets stuck, preventing the float from moving up and down normally. This situation causes the fuel gauge needle to stay fixed at a certain position. The fuel level sender can float on the surface of the gasoline. One end of the lever is the float, and the other end is a potentiometer. When the fuel level drops, the potentiometer rotates through the lever principle. Different positions have different potentials, resulting in different resistance values, and thus correspondingly different voltages, which can be seen on the vehicle's instrument panel. 2. Impact: If the fuel level sender gets stuck or is damaged, the fuel gauge needle will not move on the instrument panel. If the fuel level sender is broken or aged and takes in fuel, it will not float, causing the fuel gauge to respond slowly and affecting the driver's judgment.