Automotive Wire Harness Manufacturing

Midwest Molding, Inc. delivers wire harness assembly and integrated manufacturing support for demanding automotive applications. From harness production and overmolding to multi-component assembly, our engineering team helps simplify sourcing, support complex components, and maintain consistent quality. With molding, assembly, and welding capabilities under one provider, we support customers seeking dependable electrical assemblies for vehicle programs across the United States.

Automotive wire harness assembly in a precision manufacturing facility

Our Automotive Wire Harness Services

Integrated harness assembly, overmolding, component assembly, and engineering support for automotive electrical applications.

Wire Harness Assembly

Build ready-to-install wire harness assemblies for automotive and transportation applications, supported by manufacturing engineers, quality systems, and integrated project management.

Pre-Mold & Overmolding

Inject plastic over pre-existing parts, substrates, or inserts through pre-mold and overmolding, offered alongside wire harness assembly for demanding automotive applications.

Multi-Component Assembly

Assemble molded parts with additional components into complete assemblies while using error proofing, project engineering, and redesign support to protect functionality and quality.

Assembly Integration

Integrated Support For Harness Programs

Midwest Molding, Inc. supports automotive wire harness programs with more than assembly alone. Customers can access wire harness assembly, injection molding, overmolding, multi-component assembly, and project engineering through one manufacturing provider. This integrated approach helps simplify supplier coordination for automotive and transportation customers while supporting complex components, production quality, and cost-conscious manufacturing across the United States.

Technician assembling automotive wiring harness components
The Midwest Molding Difference

Why Choose Midwest Molding, Inc.?

An integrated manufacturing partner for complex automotive harness and molded-component programs.

Integrated Capabilities

Access molding, assembly, and welding capabilities through one manufacturing provider for streamlined program coordination.

Engineering Support

Experienced management and project engineering teams support complex components, tooling, assembly, and process optimization.

Quality Systems

IATF and ISO certifications cover injection molded and insert molded products for automotive manufacturing programs.

Supplier Recognition

Midwest Molding’s track record includes a Delphi Pinnacle Award in 2005.

Meet The Manufacturing Team

Experienced professionals supporting complex molding and assembly programs.

Midwest Molding, Inc. is a specialized plastic injection molding and assembly manufacturer serving demanding automotive and manufacturing applications. Its experienced management team supports long-term growth through capabilities spanning injection molding, assembly, and welding. The company’s Bartlett, Illinois headquarters includes a dedicated manufacturing facility supporting wire harness assembly and related production services. With management experience averaging more than 35 years, Midwest Molding works with customers that need integrated support for complex components, electrical assemblies, tooling, and production programs. Its vision is reflected in a practical focus on precision plastic molding and assembly for demanding manufacturing needs, with quality, delivery, service, and competitive cost performance central to customer support.

ExperienceManagement team averages more than 35 years
HeadquartersBartlett, Illinois manufacturing facility
Customer FocusQuality, delivery, service, and cost performance

Frequently Asked Questions

Who makes wiring harnesses for vehicles?

Vehicle wiring harnesses are made by specialized automotive component manufacturers and assembly providers. Midwest Molding, Inc. provides wire harness assembly for automotive and transportation applications, supported by project engineering, molding, multi-component assembly, and quality management systems. This integrated capability helps automotive customers source wire harness assemblies alongside related molded components.

Where can I find a harness supplier?

What does automotive wire harness manufacturing include?

Can wire harness assembly be combined with molding?

Does Midwest Molding support automotive suppliers?

Can Midwest Molding help with complex harness programs?

What quality certifications does Midwest Molding have?

How do I request automotive wire harness manufacturing support?

Have More Harness Questions?

Talk with the manufacturing team about your automotive assembly requirements.

Certified & Recognized

Awards and Recognition

IATF 16949 certification for Midwest Molding

IATF 16949

Listed company certification for automotive quality management.

ISO 14001:2015 certification for Midwest Molding

ISO 14001:2015

Listed company certification for environmental management.

ISO 9001:2008 certification for Midwest Molding

ISO 9001:2008

Listed company certification for quality management.

ISO/TS 16949:2009 certification for Midwest Molding

ISO/TS 16949:2009

Listed company certification for automotive quality systems.

Minority Business Enterprise certification for Midwest Molding

Minority Business Enterprise certification

Listed company certification held by Midwest Molding.

Discuss Your Automotive Harness Program

Share your assembly requirements and connect with Midwest Molding’s manufacturing team.

Contact Us Today

For immediate assistance, feel free to give us a direct call at 224.208.1110.