Changes in the automotive wiring harness industry : Market restructuring under the competition for technological dominance

Changes in the automotive wiring harness industry 01

International competition situation : oligopoly and regional differences

The global cable industry is currently dominated by oligopolies, with multinational groups such as Yazaki (Japan), Sumitomo Electric (Japan), Leoni (Germany), and Aptiv (USA) accounting for a total of 71% of the market share. Relying on technological accumulation, large-scale production, and strategic cooperation with leading automakers (such as Volkswagen and Toyota), these companies have long controlled the high-end field.

  • Core technology barriers : Overseas companies have patent advantages in ultra-high voltage cables (1500V+ tolerance), high-speed communication technology (in-vehicle Ethernet), etc. Typical examples include Yazaki’s cooled charging cable solution and Aptiv’s Smart Vehicle Architecture (SVA).
  • Regional strategic differences : European and American manufacturers focus on luxury car models, Japanese companies are good at refined cost management, and the Chinese market presents a dual-track structure of “foreign control and local rise coexisting”.

Localization substitution process: breakthrough strategies for domestic enterprises

Benefiting from the explosion of new energy vehicles and policy support, Chinese local manufacturers are growing rapidly. It is estimated that the domestic market size will exceed 120 billion in 2025, and the proportion of new energy dedicated cables is expected to reach 62.5% (about 75 billion). The core driving forces include:

  • Cost competitiveness : Domestic labor costs are 40% lower than those of international companies, and the localized supply chain improves delivery efficiency by more than 20%.
  • Key technological breakthroughs : Companies such as Huguang and Tianhai have completed mass production of 1000V+ high-voltage cables and Ethernet harnesses, and have successfully entered the supply systems of leading automakers such as Tesla and BYD.
  • Agile service capabilities : New forces such as NIO and Ideal prefer local cooperation, which has shortened the customized development cycle to 70% of the original duration.

Technology iteration direction: high pressure, weight reduction design and intelligent upgrade

  • Popularization of high-voltage systems : The promotion of the 800V platform has driven the demand for high-voltage cables, and the global market size is expected to reach US$18 billion in 2025 (China accounts for 45%). Technical bottlenecks involve silicon-based insulation materials, composite shielding layer design and cooling solutions. The liquid-cooled cables jointly developed by CATL and Aptiv are already adapted to 1000V systems.
  • Lightweight technology evolution : Aluminum conductors can replace copper to reduce weight by 30%, and carbon fiber coating technology can further reduce weight. In order to solve the problem of aluminum oxidation, Huguang uses nano-coating technology to make the conductivity reach 97% of copper.
  • Smart interconnection needs : L3+ autonomous driving promotes the application of high-speed communication cables, and 10Gbps in-vehicle Ethernet becomes a technical benchmark. After Ideal L9 adopts Ethernet architecture, the total cable length is reduced by 40% and the signal delay is reduced by 60%.
Changes in the automotive wiring harness industry

Industry dilemma: supply chain fluctuations and profit squeeze

  • Raw material prices fluctuate : copper costs account for 65%-80%, and the rising copper prices in 2023 will cause the industry’s average gross profit margin to decline by 3-5 percentage points.
  • Pressure from customer concentration : The top five automakers generally account for more than 70% of customers, limiting suppliers’ bargaining power. For example, Aptiv’s gross profit margin for supplying Tesla is only 15%, 5 percentage points lower than the industry average.
  • Challenges of technological upgrading : Foreign companies reduce costs through modular solutions (such as BYD e-platform 3.0 reduces 70% of connector types), and local companies need to accelerate the intelligentization of production lines (target automation rate of 75% in 2025) to maintain their advantages.

Future competition focus: ecological integration and green transformation

  • Industry collaborative innovation : shifting from single component supply to system-level solutions, such as Aptiv’s intelligent architecture solution, which shortens the R&D cycle by half a year.
  • Environmentally friendly production transformation : New EU regulations require cable recycling rates to exceed 95%, accelerate the application of bio-based materials (such as BASF’s Ultramid® Bio), and reduce carbon emissions by 60%.
  • Regional capacity layout : Mexico has become a core supply node in North America, with production capacity quadrupling in 2023; the Yangtze River Delta region is home to companies such as Huguang and Tianhai, meeting half of domestic demand.

Conclusion

Competition in the automotive cable industry has shifted from a simple price war to a multi-dimensional confrontation of technological strength, ecological synergy and green development.

In the next five years, if local companies can make breakthroughs in high-voltage technology, intelligent manufacturing and environmentally friendly materials, their market share is expected to jump from the current 3%-4% to 15%, reshaping the global industrial landscape.

Multinational companies need to consolidate their position through modular upgrades and regional layout. This struggle between “technological innovation and operational efficiency” will redefine the value chain of the 100 billion market.