Notice of System Maintenance

Partial system maintenance of the website will be performed on the following date and time. During the maintenance, some functions and contents will not be available. We apologize for any inconvenience this may cause and appreciate your understanding and cooperation.
Downtime：May 5, 2024. 7:00 - 8:00 (JST) *the end time may vary
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OFFICES & GROUP COMPANIES

Sumitomo Wiring Systems (U.S.A.), Inc.

Sumitomo Electric Wiring Systems (Detroit office)

Sumitomo Wiring Systems (U.S.A.)

Manufacturing and sales of wiring harnesses and harness components

Sumitomo Wiring Systems (U.S.A.) is responsible for the sales of high-quality connectors and terminals for automotive electrical distribution systems. SWS-USA also manufactures several types of wiring harnesses for Tier 1 automotive suppliers.

Contact Information

Main Office

27360 Drake Road, Farmington Hills, MI 48331

Phone: (248) 347-9450