With the development of science and technology, the car above the wiring harness more and more, and the electronic control system and the relationship between the wire harness is very close, it was added such a metaphor, if the computer, sensor and the implementation of components used in the body, Then the computer is the brain, the sensor is the feeling of organs, the implementation of components is the movement of the organ, and the harness is the blood vessels and nerves.
The main body of the car circuit is the car harness, it is mainly used to connect the car's electrical components, if the wiring does not exist, then the car circuit will not exist. At present, whether it is a high-level car or economy car, their wiring harness is basically the form of almost all, are connected plug-in, wire and wrapped tape together, it not only to ensure that can send electrical signals, but also To ensure the reliability of the connection circuit, to be able to supply electrical and electronic components of the required current value, to prevent the surrounding circuit electromagnetic interference, and also to exclude electrical short circuit.
Automotive wiring harness processing from the function of the above classification, can be divided into a carrier to drive the power of the implementation of the power line and the sensor input signal input signal of these two. Power lines are mainly used to transport large current thick wire, and the signal line is not required to carry the power of fine wires.
The cross-sectional area of the conductor used for the motor and actuator is typically 0.85 and 1.25 square millimeters; and the cross-sectional area of the conductor used in the power supply circuit is 2, 3 and 5 mm2; the cross-sectional area of the wire used for the special circuit is 8,10,15 , 20 square millimeters. The larger the cross-sectional area of the wire, the greater the capacity of the current, the greater the choice of the wire, in addition to considering the electrical performance, but also taking into account the physical performance of the vehicle when the constraints, so its optional The range is wide.