What is the standard test for automotive wiring harness? What is an automotive wiring harness?

An automotive wiring harness standard is a set of specifications and requirements developed and followed by the automotive industry for designing, manufacturing and testing automotive wiring harnesses. An automotive wiring harness is an assembled component used for electrical connections, which consists of multiple wires, insulating materials, connectors, protective sleeves, etc., for transmitting power and signals in an automobile. Here are some common automotive wiring harness standards: 1. ISO 6722: The ISO 6722 standard specifies requirements for automotive wires and cables. It covers wire and cable wire size, material selection, temperature resistance, electrical performance, insulation, oil resistance, heat resistance and other aspects of the requirements. 2.SAE J1128: SAE J1128 standard is the American Society of Automotive Engineers (SAE) issued by the automotive wires and cables standard. It specifies the rated voltage, wire size, material requirements, electrical properties, insulation, flame retardant properties of wires and cables, etc. 3.SAE J1939: SAE J1939 standard is a standard used for commercial vehicle communication networks, which defines the communication protocols and physical layer interfaces used to transmit data and information in the vehicle system. The standard also covers requirements for wire harness connectors, communication rates, troubleshooting, etc. 4. LV 112: LV 112 is a standard issued by the German Vehicle Manufacturers' Association (VDA) for the testing and validation of electrical and electronic components in automobiles. It covers the requirements for temperature characteristics, electrical characteristics, durability and fire resistance of wiring harnesses. Automotive wiring harnesses, as a core component of the electrical system in a vehicle, undertake the important task of transmitting power and signals. They have a wide range of applications in automobiles, including the following:1. Power transmission: automotive wiring harnesses are used to transmit power from the battery to various electronic devices and systems in the vehicle, such as the engine control unit, lighting systems, starter motors, power windows, etc.2. Signal transmission: wires in the wiring harnesses are used to transmit a wide variety of signals including sensor signals, control signals, audio signals, video signals, etc., in support of the Various functions and systems of the vehicle.3. Data communication: Some modern automotive wiring harnesses also involve data communication, which is used to support the vehicle's communication network and connect to external devices, such as navigation systems, audio entertainment systems, Bluetooth connectivity, etc.4. Protection and insulation: Insulation materials and protective sleeves in the wiring harnesses play a role in protecting the wires from unfavorable environmental factors, such as mechanical damages, moisture, chemicals, and heat sources. The manufacturing process of automotive wiring harnesses requires strict adherence to standards and requirements, and a variety of tests and inspections. These include confirmation of wire sizes and insulation materials, installation and fixing of connectors, testing of electrical connectivity, insulation and flame retardant properties, etc. In addition, automotive wiring harnesses are required to meet special requirements such as reliability, durability, corrosion resistance, water resistance, and vibration resistance, in order to adapt to the various harsh conditions of automobile driving. The automotive wiring harness standard is a series of specifications and requirements developed to ensure the safety, reliability and compatibility of automotive electrical systems. As an important electrical connection component in vehicles, automotive wiring harnesses bear the functions of power transmission, signal transmission and data communication, which are crucial to the performance and functioning of automobiles.

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