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Custom Wire Harness Assembly Manufacturing Services

Custom Wire Harness Assembly and Superior Customer Service

Manufacturing Custom Wire Harness Assemblies Since 1990

As a leading wire harness manufacturer since 1990, we provide unmatched expertise and quality with personalized service to deliver exactly what you need. Our highly trained team treats every custom wire harness assembly as unique, ensuring robust and reliable results.

Our refined quality control and deep industry knowledge prevent costly problems down the road—such as field failures or production delays—for each client. Whether you need 20,000 small wire harnesses for hair clippers or a short run of a critical component for a sophisticated medical device, you will receive a robust and reliable assembly.

Vertically Integrated Solutions

High-quality Standards

Strict Specifications

Any Length, Any Quantity, Any Complexity Manufactured To The Highest Standards

  • Automated cutting & stripping of multi-conductor cable
  • Cutting, stripping & terminating of lead wires
  • Large harness capability (up to 50 feet)
  • Braiding
  • Looming
  • Ultrasonic welding
  • Potting
  • ROHS-compliant tin dipping
  • Inline hot stamping of alphanumeric characters
  • Semi-automated heat shrinking
  • Wire marking
  • Label wrapping
  • Automated pull testing
  • Continuity & functional testing of complete harnesses

Our New Product Introduction (NPI) Process for Custom Wire Harness Assemblies

Terminated twisted pairs wire assemblies

Bill of Materials
The customer provides a material list and requirements. Our engineers review it and determine exact wire lengths based on bends and breakouts, which may differ from the original prints.

Cut Sheet
We refine and organize the BOM into a detailed cut sheet, specifying wire type, gauge, color, length, strip-back distance, and jacket material—ensuring readiness for the NPI build.

The NPI Build
We lay out the wire assembly on a harness board and document the process. For complex builds (up to 50 feet with multiple breakouts), customer approval is required before full production.

Markup
We review and test the NPI build, adjusting as needed (e.g., wire lengths, strip-backs). Changes are documented via Engineering Change Notices, and continuity testing confirms correct routing.

Production
After the completion of changes and testing, the customer has final NPI sample review to make any changes needed. After customer sign-off, the approved NPI sample moves into full-scale production.

Your All-In-One Custom Wire Harness Assembly Solution

As your all-in-one wire harness assembly manufacturer, we deliver rigorous, reliable, and responsive custom wire harness assembly solutions across industries. Powered by refined quality control, deep industry knowledge, and ISO 9001:2015 certification, we prevent costly problems like inconsistencies or compliance issues, ensuring performance and exceeding expectations for every client.

Completed wire harness with close up of connectors

Custom Wiring Harness Applications

Many everyday products and tools rely on wire harness assemblies to function reliably and efficiently. As a wire harness assembly manufacturer, we support a wide range of industries by providing solutions that simplify installation, enhance durability, and ensure consistent performance.

Medical Equipment
Diagnostic equipment, patient monitoring systems, and hospital beds

Aerospace and Aviation 
Small engines, avionics systems, and lighting systems

Heavy Equipment Electronic Controls
Trailer lighting kits and braking systems

HVAC Industrial Controls 
Commercial HVAC units, air handlers, and ventilation control systems

Industrial Control Components
Food and beverage equipment, arcade games, and sport arena lighting

Agriculture
Tractors and combines, lawn and garden equipment, and livestock care equipment

A custom wire harness is a bundled grouping of wires and/or cables that is installed into a larger product or device during the manufacturing process to create connections such as power or data within the product or device. Each wiring harness assembly project is unique in its length, quantity, complexity and application. No two custom wire harnesses are alike. 

What Makes a Wire Harness Assembly Different From a Cable Assembly?

Frequently Asked Questions

We have no strict minimum order quantity, supporting prototypes, small runs, and scaling up to high-volume production. Whether you need a handful of units or thousands, our flexible manufacturing and custom stocking programs accommodate your needs. Our refined quality control and deep industry knowledge ensure consistent quality from the first piece, preventing costly problems like inconsistencies or scaling issues down the road for each client.

Lead times vary depending on complexity, quantity, and material sourcing, but our streamlined NPI process, US-based production, and proactive planning help deliver on schedule—often faster than multi-supplier alternatives. Early engineering reviews, continuity testing, and adjustments prevent delays from routing errors, length issues, or rework. Provide your BOM and requirements for an accurate, project-specific timeline.

Every harness is built to IPC-WHMA-A-620 Class II and III standards by certified IPC trainers, with full compliance to UL 508A and RoHS. We perform comprehensive CableEye testing for opens, shorts, mis-wires, resistance, and isolation, plus automated pull testing on all crimps to detect under- or over-crimping. This refined quality control, backed by deep industry knowledge since 1990, proactively prevents costly problems such as field failures, connection issues, or durability breakdowns in demanding environments.

Costs are driven by wire type and gauge, harness complexity (breakouts, length up to 50 feet, braiding, potting, labeling), quantity (higher volumes reduce unit costs), and additional processes (e.g., ultrasonic welding, custom connectors). Our NPI process identifies optimization opportunities early to lower expenses, while refined quality control prevents expensive downstream issues like defects or returns. We provide clear, no-hidden-fee quotes—submit your specs for a precise estimate.

Yes—we source wires, connectors, terminals, and specialty materials from a trusted network, including high-temperature, marine-grade, and RoHS-compliant options. Our US-based, vertically integrated manufacturing ensures availability and compatibility. Deep industry knowledge combined with refined quality controls helps anticipate shortages, mismatches, or delays, preventing costly disruptions that could impact your production timeline or product reliability.

We maintain IPC-WHMA-A-620 (Class II/III) certification with certified trainers, UL 508A compliance, RoHS processes, and ISO 9001:2015 quality management. All assemblies undergo full continuity/functional testing and automated pull testing, with documentation and customer approval during NPI. We guarantee workmanship and reliability; rework is addressed for any issues from our processes. Trusted across medical, aerospace, heavy equipment, and industrial sectors, our refined quality control and deep industry knowledge prevent performance, environmental, or compliance problems for every client.