US Wire Harness Manufacturers: 13 Best US Wire Harness Manufacturers in 2025

Strong manufacturing partnerships are vital in the automotive, aerospace, and military industries, where precision and reliability matter.

If you’re looking for reliable wire harness manufacturers, we have a curated list that includes domestic and international manufacturers with a strong U.S. presence.

This list provides helpful information such as location, markets served, years in business, capabilities, and certifications, helping you select the manufacturer that best fits your needs.

13 Best US Wire Harness Manufacturers

Below is a sample list of 13 top US wire harness manufacturers.

Wiringo

• Founded: 2014
• Headquarters: China
• US operations: a strong presence in US automotive, aerospace, medical device, telecommunication, and industrial sectors
• Website: https://www.wiringo.com/

Company Overview:

Wiringo is an established manufacturer with over a decade of experience producing high-quality wire harnesses and custom cable assemblies.

Their diverse services include custom wire harness design, rapid prototyping, electrical testing, and quick turnaround. Their products range from engine harnesses to dashboard/cabin harnesses, battery wiring harnesses, body and lighting harnesses, and HVAC wiring harnesses.

Using advanced manufacturing technologies, including semi- and fully automatic machines, and supported by an experienced engineering team certified to IPC/WHMA-A-620 standards, Wiringo develops custom solutions (over-mold, waterproofing, high-voltage, OEM, and others) to meet specific designs and performance requirements.

The company maintains several valuable certifications, such as ISO 9001 and IATF 16949, to deliver top-quality products (UL, RoHS, and IPC/WHMA-A-620).

Wiringo’s commitment to innovation, quality, and customer satisfaction makes them a top choice for efficient, scalable, and cost-effective wire harness solutions.

Client testimonial 

I have received a shipment of cables that was supplied (p/o : 5130903714) . I would like to say thank you, to you and your staff (factory) well done. I am very happy with the quality of the work.

— Arthur, CEO

Amphenol Corporation

• Founded: 1932
• Headquarters: Wallingford, Connecticut, USA
• US operations: Several facilities across the United States, such as a low-voltage wire harness production facility in Oconto, Wisconsin
• Website: https://www.amphenol.com/

Company Overview:

Amphenol Corporation has a long and distinguished 90-year history as a major interconnect products provider, including custom cable assemblies and wire harnesses. They provide standard and custom solutions to aerospace, automotive, defense, telecommunications, and other industrial applications to meet the demands of complicated projects.

Amphenol’s manufacturing competencies position it as a leader in overmolding, fiber optic integration, and high-voltage systems. Nothing but the best is acceptable, as it is certified to ISO 9001, IATF 16949, AS9100, and IPC/WHMA-A-620 to ensure product reliability.

Because most facilities are in the US, Amphenol can deliver quick production turnaround and service. Their single-point customer concept is why they are the go-to choice for mission-critical applications.

Precision Cable Assemblies

• Founded: 1980
• Headquarters: Brookfield, Wisconsin, USA
• US operations: Manufacturing facilities in Brookfield and Waukesha, Wisconsin
• Website: https://www.pca-llc.com/

Company Overview:

PCA is a leading manufacturer of specialty wire harnesses. With over 40 years of experience, PCA has supplied quality products for marine and outdoor power equipment, generator sets, recreational vehicles, and home appliances.

PCA provides prototype development, design consulting, mass production, and 100% continuity testing. IATF 16949 and ISO 9001 certified, PCA has consistently met high industry standards and offered reliable, consistent solutions to OEMs worldwide.

Cypress Industries

• Founded: 2001
• Headquarters: Austin, Texas, USA
• US Operations: Manufacturing facilities in Texas and additional global production sites.
• Website: https://www.cypressindustries.com/

Company Overview

Founded in 2001, Cypress Industries is a leading manufacturer specializing in custom wire harnesses, cable assemblies, and electromechanical assemblies. The company serves industries including automotive, industrial, medical, and telecommunications. 

Cypress offers end-to-end solutions, from design and prototyping to full-scale manufacturing, including over-molding, high-voltage harnesses, and comprehensive testing. With ISO 9001 and IPC/WHMA-A-620 certifications, Cypress ensures that all products meet stringent quality standards. 

The company’s advanced manufacturing capabilities and global production footprint allow it to deliver custom, high-performance wiring solutions with rapid turnaround and exceptional precision.

Samvardhana Motherson Group (Motherson Wiring)

• Founded: 1975
• Headquarters: Noida, India
• US operations: Different locations in the United States, with facilities in Michigan, California, and Texas
• Website: https://www.motherson.com/

Company Overview:

SMG is a global automotive component leader specializing in electric distribution systems. With 50 years of experience, Motherson Wiring Harness Division offers passenger car solutions for heavy, medium, and light-duty commercial vehicles.

SMG is rigorously certified, such as IATF 16949 for automotive quality, ISO 9001 for general quality control, and ISO 14001 for environmental specifications. To supply dependable products, SMG conducts all electrical testing and validation.

With offices in the Americas, Europe, and Asia, SMG provides timely and local service to clients worldwide.

Co-Operative Industries Aerospace & Defense

• Founded: 1946
• Headquarters: Fort Worth, Texas, USA
• US operations: Specialized aerospace and defense operations in Fort Worth, Texas
• Website: http://www.coopind.com/

Company Overview:

With a 75-year history,  CIA&D is well known for delivering aircraft wiring harnesses to defense contractors and aerospace customers. The company holds certifications AS9100 and ISO 9001 for aerospace quality management and general quality.

Its capabilities involve designing and manufacturing high-voltage ignition leads and complex cable assemblies. It also provides repair and overhaul for legacy and future aerospace systems.

As a trusted source, CIA&D operates out of its Fort Worth, Texas, facility to provide neighborhood service and near-in-time delivery across the United States. Its technical expertise and customer-centric approach make it a source of choice for mission-critical aerospace and defense applications.

Aptiv PLC (formerly Delphi)

• Founded: 1994
• Headquarters: Dublin, Ireland
• US operations: Aptiv has many plants located throughout the United States, focusing on vehicle electrical architecture design, manufacturing, and assembly
• Website: https://www.aptiv.com/

Company Overview:

Aptiv PLC is a technology supplier worldwide with capabilities in advanced vehicle electronics and electrical architecture solutions. It provides an extensive array of products, such as electric vehicle high-voltage wiring harnesses and data connectivity.

Aptiv is an expert in vehicle electrification, signal distribution, and autonomous driving. It holds several certifications, including IATF 16949 for automotive quality, ISO 9001 for general quality, and ISO 26262 for functional safety in automotive systems. Testing procedures still guarantee full compliance with international safety and performance standards by-products.

Aptiv has established production and engineering centers in North America, Europe, and Asia to ensure flexible production capacity and in-market customer service. The company’s emphasis on innovation and sustainability makes it an ideal partner for autonomous mobility.

Omega Leads, Inc. 

• Founded: 1961
• Headquarters: Santa Monica, California, USA
• US operations: Santa Monica, California production plant
• Website: http://www.omegaleads.com/

Company Overview:

Omega Leads, Inc., a 60+-year-old custom cable assembly manufacturer, specializes in different custom cable assemblies. Its products include custom wire harnesses, data cables, and fiber optic cables for the aerospace, medical, and industrial automation industries.

Omega Leads has low and high-volume manufacturing capabilities available at rapid turnaround times. In addition to manufacturing, it offers value-added processes such as cable testing, wire identification, and wire marking.

Headquartered in Santa Monica, Omega Leads is known for its customer-oriented approach and technical expertise. Their concept-to-product solutions ensure high-quality, defect-free products tailored to customer specifications.

Client testimonial 

Omega Leads has been an invaluable partner in delivering wire harnesses and custom cable assemblies that meet high military standards. We are highly impressed with their attention to detail and ability to offer ruggedized products that work flawlessly in the field. 

We have been working with them for a long time now, and they have never failed to satisfy us. We trust them to support our most demanding military projects on time and within budget. 

—Senior Systems Engineer, Defense Technology Solutions

Y.C. Cable

• Founded: 1985
• Headquarters: Fremont, California, USA
• US operations: Fully-equipped manufacturing and distribution facility in Fremont, California
• Website: https://www.yccable.com/

Company Overview:

Y.C. Cable is a leading custom cable assembly and wire harness manufacturer built on a reputation for providing high-quality solutions.

Y.C. Cable is IATF 16949 and ISO 9001 certified and IPC-620 compliant, ensuring the highest industry and quality standards. Its products include Ethernet cables, robotics cables, and battery cables for power and data transmission applications.

Y.C. Cable emphasizes quick turnaround and exceptional customer service. It also provides value-added services, including wire marking, cable testing, prototyping, design support, and customized solutions. With small-batch and mass-production capabilities, it’s an ideal manufacturing partner.

TE Connectivity

• Founded: 1941
• Headquarters: Schaffhausen, Switzerland
• US operations: Complete facilities and manufacturing across the United States
• Website: https://www.te.com/

Company Overview:

TE Connectivity is a global leader in industrial technology with over 80 years of experience. Its interconnect solutions range from simple jumpers and high-speed data cables to power cables and advanced harnesses, connecting components, subsystems, and equipment for various industries and applications.

With dedicated engineering teams, TE Connectivity partners with customers to provide large-scale production. Its organization is AS9100 and IATF 16949 certified to ensure compliance with industry-leading performance, safety, and quality levels.

Molex, LLC. 

• Founded: 1938
• Headquarters: Lisle, Illinois, USA
• US operations: End-to-end manufacturing capabilities across the United States
• Website: https://www.molex.com/

Company Overview:

Molex is a respected electronic and fiber optic connectivity system manufacturer known for its progressive technology. Its extensive product line includes connectors, optical solutions, capillary tubing, and micro-components.

Molex connectors have become an industry standard, offering high-level interconnect solutions for automotive, consumer electronics, healthcare, manufacturing, and telecom infrastructure.

With a global manufacturing network certified to ISO 9001, IATF 16949, or ISO 13485 standards, Molex supports both small-batch custom projects and high-volume production.

Sumitomo Electric (Sumitomo Wiring Systems)

• Founded: 1897
• Headquarters: Osaka, Japan
• US operations: Presence in the United States through its subsidiary firm, Sumitomo Wiring Systems (U.S.A.), Inc.
• Website: https://www.sumitomoelectric.com/

Company Overview:

Sumitomo Wiring Systems (SEWS) business division provides innovative wire harnesses and electrical distribution systems to top automobile manufacturers worldwide.

SEWS operates American manufacturing and engineering facilities. Thus, the “local for local” supply model can empower the needs of automotive customers. With extensive industry certifications, including IATF 16949 and ISO 14001, SEWS has been an expert in automobile wiring solutions.

Further, Sumitomo’s technological strength encompasses car wiring beyond optical fibers, electrical wiring, and advanced materials, and it is a technology giant.

Custom Wire Industries 

• Founded: 1968
• Headquarters: Milwaukee, Wisconsin, USA
• US operations: Production of custom cable and wire harnesses across the United States
• Website: https://www.customwireind.com/

Company Overview:

Custom Wire Industries, the expert in electro-mechanical assembling, has been delivering services for over 50 years, benefiting various industries such as medical, industrial, military, and telecommunication.

The firm offers complete services, including assembly design, prototyping, and manufacturing. It also supports over-molding, crimping, and cable testing to ensure performance reliability.

Upgrading constant high-standard standards, including ISO 9001 certification and IPC/WHMA-A-620 accreditation, Custom Wire Industries offers custom-designed solutions to solve complex and specialty customers.

Client testimonial 

Custom Wire Industries truly lives up to its name. They have always delivered the promised custom solutions to us. Their manufacturing facilities comply with top industry standards and military regulations. They have helped us meet tight deadlines and we have been able to secure good business, all thanks to them. 

—Harry K, Strategic procurement manager

Yazaki Corporation

• Founded: 1941
• Headquarters: Tokyo, Japan
• US operations: Ten production facilities in the Americas, including operations in Leon and Silao, Mexico
• Website: https://www.yazaki-group.com/

Company Overview:

Yazaki Corporation is a world leader in manufacturing electrical distribution systems, including automotive wire harnesses. The company is an expert in power and data solution development and emphasizes sustainability by implementing environmentally friendly processes and materials.

Through its collaboration with Yazaki North America, the company has production and engineering facilities to support vehicle-specific wiring configurations. All processes from the Yazaki Group, from raw materials to the design, production, construction methods, and final product manufacturing, are carried out in-house.

Yazaki Group has more than 10 years of experience producing high-voltage wire harnesses, which are widely used in EVs, HVs, PHVs, and FCVs. Possessed of IATF 16949 and ISO 14001 double certifications, Yazaki guarantees product quality, safety, and environmental regulation. 

How to Choose a Wire Harness Manufacturer

When selecting a wire harness manufacturer, some key factors should be considered:

• Service Capabilities: Ensure the company provides the full range of services required for your project, from prototyping to mass production.
• Industry Experience: Look for manufacturers with experience in your industry so that they understand the specific requirements and standards.
• Safety and Performance Testing: Manufacturers are supposed to conduct rigorous testing processes to guarantee product safety, reliability, and regulatory compliance standards.
• Certifications: Look for industry-specific certifications that indicate compliance with high-quality standards and best practices.
• Customizations: Select a manufacturer capable of providing customized solutions, including specific wire lengths, connector types, and specialized cable harnesses, such as those for military applications.
• Order Quantities: Make sure the manufacturer can handle your order quantities, whether small prototype orders or mass production.
• Customer Support Options: Manufacturers with open lines of communication, technical support, and after-manufacturing support are preferred.

Choose The Best Manufacturer for Your Business

Selecting the right wire harness manufacturer is essential for ensuring quality, reliability, and industry compliance. This article has highlighted manufacturers with extensive experience, technical expertise, and certifications supporting various industries, from automotive to aerospace.

Among them, Wiringo stands out for its advanced manufacturing, customer-focused approach, and commitment to excellence. Whether you need custom wire harnesses or specialized electrical solutions, Wiringo delivers precision-crafted products to meet your specifications.