The car harness is the main body of the automobile circuit, which belongs to the connection component of the automobile electrical system. Like the human nerve and the blood vessel, it connects each functional part. A panoramic analysis of the industrial chain of car harness is carried out by the Institute of automotive research, which includes the outline of principles, production technology, material market introduction, development trend analysis, market scale analysis, market pattern analysis, and supporting supplier list.

A wire harness is a component that is tied up by a wire bundle to form a connection circuit after the contact parts terminals (connectors) made of copper materials are pressed with wires and cables. In short, it is connected to the electrical wiring of cars. The running conditions and parameters of cars are reflected on the vehicle computer through wiring harness. On the other hand, the electronic technology content of automobile wiring harness has become an important index to evaluate the performance of vehicle.

Classification of car harness

The wiring harness can be divided into two main lines and a small wiring harness. The main beam includes the engine wire harness, the central line box and wire harness, the dashboard and line harness, the cockpit wire harness, and the small harness include the door and wire harness, the wire harness of the battery, the ABS brakes line harness and so on.

Besides, according to voltage discrimination, automobile wiring harness can be further divided into high voltage wiring harness and low voltage wiring harness. The most important feature of the automobile high voltage line is high voltage and small current, and the insulation performance is high. Therefore, the insulation layer is usually thick and the core wire is relatively thin.

Production process of car harness

The production technology of car harness mainly includes line opening, pressing, preloading, assembly and so on. The main material of the wire harness is heat shrinkable material. It is an important insulating material in the car harness. The domestic market of heat shrinkable materials for automobile manufacturing is still very low, only around 20%. It is worth mentioning that 80% of the global market share by the United States and Japan occupied Sumitomo raychem.

Development trend of car harness

With the development of automotive electronics, economy, comfort and reliability will become more and more prominent, and the requirement for wiring harness will be higher. The domestic automotive wiring harness market will gradually turn from a low-cost strategic market to a cost-effective market with high technology content. The automobile wiring harness also develops towards the direction of high pressure, light weight and standardization.

With the gradual increase of electronic devices, the lightening of wire harnesses has been paid more attention. It is mainly studied from the materials, miniaturization and internal layout of wiring harness components.

Analysis of the market size of the harness industry

At present, most of domestic wire harness enterprises are foreign-funded or joint ventures, accounting for 42% of China"s wire harness industry, while private enterprises account for about 37%. The market concentration of automobile wiring harness is relatively high. The market share of the two Japanese automobile wiring harness manufacturers Yazaki and Sumitomo Electric appliances is over 50%.

With the development of automotive electrification, intelligent driving and vehicle networking, the scale of domestic automotive wiring harness industry will further grow. The domestic autonomous wiring businesses will also expand with the cost reduction and technological breakthroughs, and the scale of the market will steadily expand.