Sumitomo Electric Wiring Systems, Inc.
Motor Vehicle ManufacturingKentucky, United States1001-5000 Employees
Sumitomo Electric Wiring Systems, Inc. designs and supplies electrical distribution systems, components, and electronics for the automotive industry, supporting the electrical needs of modern, intelligent vehicles. As a subsidiary of Sumitomo Electric Industries, Ltd., the firm carries the legacy of a 400-year-old brand known for quality and reliability. Based in Bowling Green, Kentucky, the company operates in the motor vehicle manufacturing sector with a focus on delivering high-quality products on time in a safe environment. In 2025, SEWS announced a $17 million expansion of its Simpson County facility in Kentucky, reflecting ongoing capacity growth in the U.S. automotive sector. The expansion is expected to create 76 new full-time positions and strengthen the regional manufacturing footprint.