We are a domestic, Michigan based, B2B wire harness manufacturer, serving several industries including: Trailer Manufacturers, Automotive Aftermarket, Medical, Towing System Manufacturers as well as the Distribution Sectors for these industries.  Our focus is: Quality Products, at Competitive Pricing, delivered On Time to our customers.


Vanguard Manufacturing specializes in designing and manufacturing innovative wiring harness solutions for various industries worldwide.


Wire Harness Fabrication Services


  • Wire Cutting & Stripping
  • Wire Termination
  • Wire Soldering & Splicing
  • Custom Injection Molding
  • Sample Prototyping
  • Wire Harness Design & Production Assembler
  • Customized Retail Packaging
  • Custom Wiring Fabrication

B2B Replacement Products


  • Custom Wiring
  • 7-Way, 5-Way, 4-Way, and 3-Way Trailer Harnesses & Accessories
  • Standard Molded Connectors
  • Wiring Kits
  • Trailer Lights
  • 4 Flat 16 Ga Jacketed Trailer Connector with Sealed Plug

Vanguard Advantages


  • One Source, One Supplier
  • Make High Quality Products at Lower Costs Than Competitors
  • Domestic Components
  • Larger Volume Discounts
  • On-Time Delivery
  • 24-Hour Online Ordering
  • 100% Guaranteed Satisfaction
  • OEM to OEM Manufacturer / B2B
  • On-going New Technology


We are one of the largest, fully integrated wire harness manufacturers in the USA and have been servicing companies for over 30 years. Our wire fabrication services include: cutting, stripping and molding of various wire connectors and harnesses used in a wide range of vehicle manufacturing industries: Automotive / Car, RV, Boat, Motorcycle, Brake Lights, Trailer Manufacturing, Truck and Van Accessory markets, Agricultural, Military and other markets that require wire connectors or harnesses of any kind.

At VanGuard we strive to reach each goal we set through implementing quality standards, processes and seeking new cable technology. Our company focuses on training and education to remain competitive in the cable wire harness industry. Our mission is to build reliable, resourceful wiring harnesses that will meet our customers needs. Each year, as we continue to grow and expand, we strive to continuously improve our quality processes and company procedures while implementing new wire harness assembler technology. Our educated staff has the capabilities to design and build unique wiring applications for specialized projects.


VanGuard Manufacturing is proud to be a member of the National Association of Trailer Manufacturers [NATM], North American Trailer Dealers Association [NATDA], and compliant with the specifications of the National Marine Manufacturers Association [NMMA].  All of our raw materials and our wiring harnesses, connectors, and cables meet all necessary criteria and specifications for these association requirements as well as being RoHS compliant.  We are compliant with UL Certifications for our products that require same.