Automotive wiring harness is the main body of the car circuit, connecting the electrical and electronic components of the car and making it function, there is no wiring harness does not exist in the car circuit. At present, whether it is a luxury car or an economy ordinary car, the form of wiring harness is basically the same, of course, motorcycle harness for all the motorcycle is also important! Are made up of wires, connectors and wrapping tape. It is necessary to ensure the transmission of electrical signals, but also to ensure the reliability of the connected circuit, to supply electrical and electrical components with the specified current value, to prevent electromagnetic interference to the surrounding circuit, and to exclude Electrical short circuit.
The car harness is functionally divided into two types of power lines that carry the drive actuator actuators (actuators) and the signal lines that carry the sensor input commands. For example, the car audio wiring harness, the power line is to transport large current thick wire, and the signal line is not carrying electricity of the fine wire (fiber optic communication); For example, the signal circuit with a cross-sectional area of 0.3,0.5mm2.
However, as people on the comfort, economy, security requirements continue to improve, the type of electronic products on the car is also increasing, the use of automotive wiring harness will naturally increase. Someone has played an image of the metaphor: If the computer, the sensor and the implementation of the function of the components with the human metaphor, it can be said that the computer is equivalent to the human brain, the sensor is equivalent to the sensory organs, the implementation of components equivalent to the movement tube, then the harness is the nerve And blood vessels.
In the motor, the implementation of the conductor with a cross-sectional area of 0.85,1.25 mm2, and the power supply circuit with a cross-sectional area of 2,3,5 mm2; and special circuits (starter, alternator, engine ground, etc.) 10,15,20 mm2 different specifications. The larger the cross-sectional area of the wire, the greater the current capacity. The choice of wire, in addition to considering the electrical performance, but also by the physical performance of the vehicle when the constraints, so its wide range of options. For example, the frequent opening / closing of the car on the car and across the body between the wires should be composed of good bending performance of the wire. In the high temperature parts of the connector plug used in the wire, generally use the insulation and good heat resistance of vinyl chloride, polyethylene coated wire. In recent years, weak signal circuit using electromagnetic shielding lines are also increasing.
In the automotive industry, the use of automotive wiring harness also reflects the degree of modernization of the car. The increase in car harnesses, the design of the car also made new demands. All in all, the automotive wiring harness will be with the development of the automobile industry and progress, the development of the automobile industry is also to a certain extent affected by the development of automotive wiring harness.