Power in a Trusted Brand

Over 400 years ago, the Sumitomo families developed a copper smelting technique that laid the foundation for a thriving future in the industry. The Sumitomo group went on to become one of Japan’s leading corporate groups, with interests in finance, insurance, steel, and wiring, to name just a few.

Since the founding of Sumitomo Electric Industries, Ltd. in 1897 with copper wire production, the Sumitomo Electric Group companies have developed many new technologies and products through innovative R&D activities based on Sumitomo Electric manufacturing technologies for electric wire and power cables. Today, there are over 350 consolidated companies in 30 countries within the Sumitomo Electric Group.

Sumitomo Electric Wiring Systems, Inc. (SEWS) is a joint venture between Sumitomo Electric Industries and Sumitomo Wiring Systems, and was established in June, 1986. Although an American corporation, SEWS and its parent companies share common roots that can be traced back to the historic Sumitomo companies of Japan.

Automobiles of yesterday needed only basic wiring, connections, and components to power their systems. The evolution of the automobile today has transformed it into a highly technical array of electrical systems and components that are designed to add safety, comfort, fuel economy, luxury, and convenience to the driving experience. SEWS delivers intelligent products for today’s intelligent automobiles.

SEWS has multiple locations across North America and employs the finest associates. We are honored to be a leading supplier for the top OEMs in the world.

Efficient, reliable, and cost-effective. This best explains why SEWS has grown to be a global leader in the automotive wiring systems industry. We will continue to build our customer base by providing the very best products, on time and within budget.

Besshi Copper Mine of Japan

Best in Class since 1987

Grounded in Tradition
Connecting with Innovation

The Sumitomo Spirit along with our Core Values created the foundation of where we are today and provides us with the framework for tomorrow’s success.

Through creative and innovative product development, we respond clearly and surely to our customers’ needs. Our focus is now turned to the automotive society of the future – one that connects cars, people and society.


Harness Your Passion
and Talent with SEWS


We are always looking to add talented and motivated individuals to our North American team.

Join SEWS today to drive your future to an exciting and rewarding career!