1, 4-pin connection: First, determine the positive and negative poles of the air conditioning capacitor. Generally speaking, the positive mark of capacitor will be indicated by "+"or marked in red. Next, two groups of pins of the air-conditioning capacitor (two in each group) are respectively connected to the corresponding positions of the air-conditioning circuit, wherein one group of pins is respectively connected to the C terminal of the starting capacitor and the working capacitor of the air-conditioning compressor, and the other group of pins is respectively connected to the N terminal of the air-conditioning circuit and the F terminal of the starting capacitor and the working capacitor of the compressor.
2. Two-pin connection: The two pins of the air-conditioning capacitor can be directly connected to the corresponding line without distinguishing the positive and negative poles. In the two-pin connection, it is generally used as the capacitor of air conditioning fan motor.