Automotive wiring harnesses are the core of a vehicle's electrical network; without them, there is no automotive electrical system. A wiring harness is 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. Wiring harnesses have a wide range of applications, including automobiles, home appliances, computers and communication equipment, and various electronic instruments. In the automotive sector, with the development of electrification and intelligentization, high-voltage and high-speed wiring harnesses have become significant growth markets, with the high-voltage wiring harness market expected to reach 20.49 billion yuan by 2025. Automotive wiring harnesses include various types such as engine wiring harnesses, body wiring harnesses, instrument wiring harnesses, and lighting wiring harnesses. Body wiring harnesses connect the entire vehicle body and are generally H-shaped, while 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.
Els cablejats d'automoció són la xarxa principal del sistema elèctric d'un vehicle, que serveixen com a component bàsic que connecta totes les peces elèctriques i electròniques i garanteix el funcionament normal del sistema de circuits. Els arnes de cablejats consisteixen principalment en cables, capes d'aïllament, connectors i mànigues protectores, i es formen en components que connecten circuits mitjançant processos com ara el crim i l'agrupament.
En funció de la tensió, es poden dividir en cablejats d'alta-tensió i de baixa-tensió; En funció de la funció, es poden dividir en arneses de cablejat del motor, arnesos de cablejat de carrosseria, arnesos de cablejat del tauler d'instruments, arnesos de cablejat d'il·luminació, arnesos de cablejat del parabrisa davanter i posterior, arnesos de cablejat de seient, etc.
