Sumitomo Electric Wiring Systems’
Formula for Success

The Sumitomo Spirit

The Sumitomo Spirit grew out of the guiding principles set down by Sumitomo founder Masatomo Sumitomo. These principles have been developed, deepened, and handed down over generations in the Sumitomo family enterprise, and in 1891 were formulated into two business principles that all companies within the Sumitomo group follow today.

Article 1: Sumitomo shall achieve prosperity based on solid foundation by placing prime importance on integrity and sound management in the conduct of its business.

Article 2: Sumitomo’s business interest must always be in harmony with public interest; Sumitomo shall adapt to good times and bad times but will not pursue immoral business.


Our mission is to be the global leader delivering innovative electrical distribution systems that meet the demands of today’s ever-changing automotive market.

Sumitomo Electric Wiring Systems, Inc. will continue to pioneer the industry’s next generation of tailored, high-performance systems by focusing on the principles that matter most:

  • Systems integration and modularization
  • Global marketing, technical development and manufacturing
  • Advanced product and manufacturing technology
  • Developing better manufacturing by developing better people


We will establish solid relationships with our customers and continue to seek out their needs in order to provide the very best products and services.

People & Culture

We will strive to create an environment in which each individual can be a valuable contributor to our mission, while achieving professional growth, long-term job satisfaction and security.


We are committed to providing a safe and healthy work environment for our associates and will continue to implement best practices throughout our organization to ensure a consistent approach to our Safety Management System.


Combining excellence in day-to-day communications with a world-class work ethic and state-of-the-art processes, we will provide products that consistently meet expectations.


We will maintain the highest standards of dedication to ethics and environmental protection in all aspects of our business. In doing so, we become a company worthy of society’s trust.


Sharing best practices throughout our global network, we will build on our technical expertise, recognizing changes and striving for consistent growth and continuous improvement.