Cable Manufacturer 16P power input line 002 black pcb molded wire harness custom cable

• Common specifications of the wires in the car harness have a nominal cross-sectional area of 0.5, 0.75, 1.0, 1.5, 2.0, 2.5, 4.0, 6.0 square millimeters of wire (Japanese cars commonly used in the nominal cross-sectional area of 0.5, 0.85, 1.25, 2.0, 2.5, 4.0, 6.0 square millimeters), they each have allowable load current values, with different power Wires for electrical equipment. Take the whole car wiring harness for example, 0.5 specification wire for instrument lights, indicators, door lights, dome lights, etc.; 0.75 specification wire for license plate lights, front and rear lights, brake lights, etc.; 1.0 specification wire for turn signals, fog lights, etc.; 1.5 specification wire for headlights, horns, etc.; main power lines such as generator armature wire, override wire, etc. require 2.5 to 4 square millimeter wire. This refers only to the general car, the key to the maximum current value of the load, for example, the battery hitch line, the positive power line is a special car wire used separately, their wire diameter are relatively large, at least a dozen square millimeters or more, these "giant" wire will not be woven into the main harness.

• In modern automobiles, automotive wiring harnesses in particular, electronic control systems and wiring harnesses have a close relationship. Someone once played an image metaphor: If the microcomputer, sensors and the function of the executive components with the human body to compare, it can be said that the microcomputer equivalent to the human brain, sensors equivalent to the sense organs, the executive components equivalent to the organs of movement, then the wiring harness is the nerve and blood vessels.

• Automotive wiring harness is the main body of the network of automotive circuits, connecting the electrical and electronic components of the car and making them function, without the wiring harness there would be no automotive circuit. At present, regardless of whether it is a senior luxury car or an economical car, the wiring harness is basically the same in form, and is composed of wires, connectors and wrapping tape, which not only ensures the transmission of electrical signals, but also ensures the reliability of the connected circuits, supplies the specified current value to the electrical and electronic components, prevents electromagnetic interference to the surrounding circuits, and excludes electrical short circuits.

• From a functional point of view, there are two types of automotive wiring harnesses: power lines that carry the power of the actuators and signal lines that carry the input commands of the sensors. Power lines are thick wires that carry large currents, while signal lines are thin wires that do not carry electricity (optical fiber communication); for example, the cross-sectional area of wires used in signal circuits is 0.3, 0.5 mm2.

• In the motor, executive components with wire cross-sectional area of 0.85, 1.25mm2, while the power circuit with wire cross-sectional area of 2, 3, 5mm2; and special circuits (starter, alternator, engine ground wire, etc.) are 8, 10, 15, 20mm2 different specifications. The larger the cross-sectional area of the conductor, the greater the current capacity. The choice of wire, in addition to the consideration of electrical performance, but also by the physical properties of the car when the constraints, so its choice of a wide range. For example, the wire between the frequently opened/closed doors and across the body of a rental car should be composed of wire 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. In recent years, the use of electromagnetic shielding wires for weak signal circuits has also increased.

• With the increase in the functions of the car, the widespread application of electronic control technology, more and more electrical parts, wires will also be more and more, the number of circuits on the car and the power consumption increased significantly, the wiring harness also becomes thicker and heavier. This is a big 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 wiring harness to play a greater function, has become a problem facing the automotive manufacturing industry.