Recent Developments in Automotive Wiring Harness Industry

In February 2025,

Lear Corporation acquired StoneShield Engineering. This acquisition is aimed at improving the company's advanced automation capabilities within its E-Systems Business. It will position Lear Corporation as a leader in the use of next-generation automotive manufacturing technologies by equipping it with a robust portfolio of automation solutions and expertise.

In the words of Ray Scott, President and CEO of Lear Corporation, “We will also develop new advanced technologies for our wire harness production, further enhancing our efficiency and operational excellence”.

In January 2025,

Leoni AG strengthened its position in the commercial vehicle sector by opening a new plant in Agadir, Morocco. The new facility will be used to produce wiring systems for trucks, powertrains, and the off-road segment.

In May 2024,

Molex introduced the MX-DASH family of data-signal hybrid connectors that combine power, signal, and high-speed data connectivity in a single connector system. The novel wire-to-board and wire-to-wire connectors are designed to support the transition to zonal architecture. They will address the full range of emerging applications that need reliable data transmission, including autonomous driving modules, LiDAR, sensor-device connectivity, GPS, camera systems, and high-resolution displays.

In May 2023,

Sumitomo Electric accelerated the development of a new automotive optical harness for practical use in 2026. The company will combine its wire harness technology with optical communication technology to contribute to the advancement of CASE1 through high-speed, large-capacity communication.

Sumitomo’s optical harness under development is capable of ultra-high speed communication with a transmission speed of over 10 Gbps. It will support high-capacity data communication inside and outside the vehicle. The new optical harness is lightweight and has a smaller diameter compared to the conventional wire harness.  It will be responsible for data communication of high-resolution sensors required for autonomous driving.

These developments are set to drive growth in the automotive wiring harness industry. They showcase the industry’s commitment to innovation, efficiency, and sustainability in response to evolving automotive technologies and consumer demands.

The newly launched products will empower companies to enhance vehicle performance, improve electrical efficiency, and support the integration of advanced technologies like electric and autonomous driving systems.

Rapid transition towards electric and hybrid vehicles is expected to create high demand for specialized wiring harnesses capable of handling high-voltage systems. As a result, companies will look to develop high-voltage EV wiring harnesses to meet this demand.

Introduction of advanced automotive wiring harness components, like that of Molex’s MX-DASH data-signal hybrid connectors, will enable automotive designers to reimagine vehicle electronics by integrating power and high-speed data transmission within a single connector system to achieve major savings in space, size, cost, and labor.

Lear’s acquisition of StoneShield Engineering will enable the company to produce advanced technologies for wire harness production. Lear will develop advanced wiring solutions for improved vehicle safety and performan by using StoneShield Engineering’s technologies and expertise.

The global automotive wiring harness industry is going through a rapid transformation. This is mainly due to growing popularity of electric vehicles and continuous technological advancements in wiring harness components. Automotive wiring harness manufacturers are employing different tactics, including the launch of new products and establishment of new production facilities to stay ahead.

Sources:

Company: Lear Corporation, Leoni AG, Molex, Sumitomo Electric Industries, Ltd.