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Business Details
Custom Wire Harness Manufacturing Solutions
Van Guard Manufacturing has been a trusted domestic wire harness manufacturer for over 30 years, serving industries such as trailer manufacturing, automotive aftermarket, medical, and towing systems. Our commitment to quality products, competitive pricing, and on-time delivery has positioned us as one of the largest fully integrated wire harness manufacturers in the USA. We specialize in custom wiring solutions, molded connectors, and trailer harnesses, ensuring compliance with UL certifications, RoHS standards, and industry-specific requirements.

Our team of experienced professionals focuses on continuous improvement in quality processes and innovative technology to meet evolving customer needs. With three shifts and weekend operations, we guarantee timely delivery while maintaining 100% inspection and testing for product reliability. Our organizational memberships, including NATM and NMMA, reflect our dedication to industry excellence and customer satisfaction.
Services
Custom Wiring Harnesses Molded Connectors Trailer Harnesses LED Strip Lights Standard Wiring Kits
Highlights and features
  • We offer 30+ years of specialized expertise in wire harness manufacturing.
  • Our domestic components ensure superior quality and support American industries.
  • We guarantee on-time delivery with three shifts and weekend operations.
  • Our 100% satisfaction guarantee covers all custom and standard products.
  • We provide 24-hour online ordering for standard molded connectors and harnesses.
Associations and certifications
  • UL Certifications
  • RoHS
Services
Custom Wiring Harnesses
Our custom wiring harnesses are engineered to meet specific client requirements, offering durability and precision for automotive, trailer, and industrial applications. Using domestic components, we ensure weatherproof designs that simplify installation and reduce labor costs. With capabilities in prototyping and large-volume production, we deliver solutions that enhance efficiency and reliability for OEMs and distributors.
Molded Connectors
We produce waterproof molded connectors in 1-way to 6-way configurations, designed for harsh environments in trailer and marine industries. These connectors feature customizable wire gauges, lengths, and colors while meeting industry compliance standards. Our capacity to manufacture 60,000+ units weekly ensures fast turnaround for standard and custom orders.
Trailer Harnesses
Our trailer harnesses include 7-way, 5-way, and 4-way flat configurations with breakaway kits and charging systems. Designed for compatibility with major trailer lighting manufacturers, these harnesses ensure safe, waterproof connections. We offer same-day shipping on standard models and custom solutions for specialized towing needs.
LED Strip Lights
Durable 12V/24V LED strip lights provide energy-efficient illumination for trailers and vehicles. Available in 5mm and 10mm widths with customizable lengths and color temperatures, these lights feature sealed ends and optional dimming controls. Designed for both interior and exterior use, they offer 50,000-hour warranties and easy installation.
Custom Injection Molding
We provide injection molding services for over-molded wire harness components and custom parts across industries. With in-house die design and multiple presses, we support rapid prototyping and high-volume production. Our processes ensure precise, repeatable results that meet exact client specifications for durability and functionality.
People
David J. VanPortfliet
Chief Executive Officer
Graduate of Western Michigan University with a degree in Industrial Marketing & Communications, David brings 30+ years of automotive and steel industry leadership experience to Van Guard Manufacturing.
Larry D. Haagsma
General Manager
With 40+ years in sales and marketing, 30+ years in management, and 25+ years in wiring harness manufacturing, Larry oversees operations and customer service excellence at Vanguard.
Questions
What industries does Van Guard Manufacturing serve?
We serve trailer manufacturers, automotive aftermarket companies, medical device firms, towing system manufacturers, and distribution networks globally.
Do you offer custom wire harness solutions?
Yes, we design and produce fully customized wire harnesses tailored to specific client requirements, including prototyping and large-volume production.
Are Vanguard's products compliant with industry standards?
Our products meet UL certifications, RoHS compliance, and specifications for NATM, NATDA, and NMMA industry associations.
What is the lead time for standard molded connectors?
We offer same-day shipping on most standard molded connectors and maintain in-stock availability for common trailer harness configurations.
Can you help design trailer wiring kits?
Yes, we can work from CAD prints or hand drawings to create custom trailer wiring kits, including samples and prototypes for fit verification.
Do you provide injection molding services?
We offer custom injection molding with die design support, serving diverse industries through rapid prototyping and high-volume production capabilities.