In modern cars, there are a lot of car wiring harnesses, and the electronic control system is closely related to the wire harness. Someone once used an image metaphor: If the functions of the microcomputer, the sensor and the actuator are compared to the human body, it can be said that the microcomputer is equivalent to the human brain, the sensor is equivalent to the sensory organ, the actuator is equivalent to the moving organ, and the harness is the nerve and the blood vessel. Then, the connector is the body that connects the blood vessels to the body.