SGT-007-007Audio cable DC2.5 TO immersed tin L=600mm_00
The automotive wiring harness is the main body of the network that connects and enables the electrical and electronic components of the car to function; without it there would be no automotive circuitry. At present, the wiring harness is basically the same in both luxury and economy cars, consisting of wires, plug-ins and wrapping tape. It ensures the transmission of electrical signals, the reliability of the connected circuits, the supply of specified current values to the electrical and electronic components, the prevention of electromagnetic interference to the surrounding circuits and the exclusion of electrical short circuits.
From a functional point of view, automotive wiring harnesses are divided into two types: power lines, which carry the power of the actuators (actuators), and signal lines, which transmit the input commands of the sensors. Power lines are thick wires that carry high currents, while signal lines are thin wires that do
not carry electricity (optical fibre communication); for example, the cross-sectional area of wires used for signal circuits is 0.3 or 0.5 mm².
In motors and actuators, the cross-sectional area of wires is 0.85, 1.25 mm2, while for power circuits the cross-sectional area of wires is 2, 3, 5 mm2; and for special circuits (starter, alternator, engine earth wire, etc.) there are different sizes of 8, 10,
15, 20 mm². The larger the cross-sectional area of the conductor, the larger the current capacity. The choice of wire, in addition to electrical performance, is also subject to the physical properties of the vehicle, so its choice is very wide. For example, the wire between the frequently opened/closed doors and across the bodywork on a hire car should be constructed from conductors with good flexural properties. Wires used in areas with high temperatures are generally made of vinyl chloride and polyethylene covered wires with good insulation and heat resistance. Recent years have also seen an increase in the use of electromagnetically shielded wires for weak signal circuits.
The number of circuits and the amount of electricity used in a car increases significantly, and the harnesses become thicker and heavier as the functions of the car increase and electronic control technology is commonly used. This is a major problem that needs to be solved. How to make a large number of wire harnesses in the limited space of the car how to more effectively and reasonably arranged, so that the car harnesses play a greater function, has become a problem facing the automotive industry.