An automotive wiring harness is the main network of a vehicle's electrical system; without it, there is no automotive electrical system. A wiring harness refers to an assembly consisting of copper-plated contact terminals (connectors) crimped to wires and cables, then covered with a plastic-molded insulator or an outer metal shell, and bundled together to form a connected circuit.
The wiring harness industry chain includes wires and cables, connectors, processing equipment, wiring harness manufacturing, and downstream applications. The Chinese automotive wiring harness market reached 119.6 billion yuan in 2024, and the global market is expected to continue growing.
Automotive wiring harnesses include various types such as engine wiring harnesses, body wiring harnesses, instrument panel wiring harnesses, and lighting wiring harnesses. Body wiring harnesses connect the entire vehicle body and are generally H-shaped. High-voltage wiring harnesses for new energy vehicles need to meet special design requirements. In recent years, wiring harness technology has been developing towards shorter lengths and standardized specifications.
