Is the auto wire harness standard different from electronic wire harness? Mar 23, 2023

The standard of the auto wire harness is different from that of ordinary electronic wire harness. Ordinary electric wire harness is a copper single stamen, with some hardness. The car wire harness are copper and soft wires, and some soft wires are as thin as hair. Several or even dozens of soft copper wires are wrapped in plastic insulating tube (polyvinyl chloride), soft but not easy to break. Due to the particularity of the automotive industry, the manufacturing process of automobile wiring is also more special than other ordinary electronic wire harness.


The common specifications of automotive wiring standards are nominal sectional area of 0.5, 0.75, 1.0, 1.5, 2.0, 2.5, 4.0, 6.0 and other square millimeters (the named cross -sectional area commonly used in Japanese cars is 0.5, 0.85, 1.25, 2.0, 2.5, 2.5 , 4.0, 6.0 and other square millimeters), each of which allows the load current value to be equipped with wires with different power equipment. Taking the entire vehicle wire harness as an example, the 0.5 specification wire is suitable for instrument lights, indicators, door lamps, top lights, etc. The 0.75 specification wire is suitable for license plate lights, front and rear small lights, brake lights, etc. Lights and so on; 1.5 specification wires are suitable for headlights, horn, etc.; main electricity wires such as generator electrical hub wires and iron wires require 2.5 to 4 square millimeter wires. This only refers to the general car, the key depends on the maximum current value of the load. Above, these "giant" wires will not be incorporated into the main cable.

car cable assembly

The requirements of the car cable assembly standard for materials are also very strict: including its electrical performance, material distribution, temperature resistance, etc., which are higher than ordinary wire harness requirements, especially in terms of safety: such as direction control system, brakes and other aspects, brakes and other aspects, brakes and other aspects, brakes, etc. The wire harness of important components requires stricter.

Automotive wiring harness standard process: The types of electronic products on cars are also increasing, which has become a problem facing the automobile manufacturing industry. With the continuous improvement of people's requirements for comfort, economy, and security, how to arrange a large number of wire harness in limited car spaces, making the car cable assembly  more functional.


Aichie Tech electronics Co ltd has produced automobile wiring harness for more than ten years. Based on our professional technical team and flexible manufacturing system(FMS), we can provide customers with product development, graphic design, prototype, manufacturing, packaging, shipping to after -sales service.

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