Custom Wire Harness & Cable Assembly Manufacturer

From prototypes and low-volume production to large-scale manufacturing, we provide dependable assemblies engineered to meet your drawings, specifications, and performance requirements.

10,000 m² Factory | 5 Million Wires/Month | ISO 9001 | IATF 16949 | 100% Inspection

Custom Wire Harnesses and Cable Assemblies for OEM Applications

What We Do

Dongguan XSD Harness Technology Co., Ltd. is a custom wire harness and cable assembly manufacturer serving OEM customers in automotive, agricultural machinery, industrial equipment, energy storage, medical, electronics, and other applications. We manufacture assemblies from customer drawings, BOMs, wiring diagrams, CAD files, and samples, supporting prototype, low-volume, pilot, and mass production.

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What Happens After You Submit an RFQ

Submit Your Needs

Engineering Review

Quotation

Prototype / Sample

Mass Production

Our Harnesses

Expertly manufactured electrical wire harnesses and custom cables. Every project reflects our steadfast commitment to quality and precision. XSD Harness serves a wide range of industries with solutions known for outstanding performance and durability.

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energy storage

Energy Storage Cables

Custom wire harnesses and cable assemblies for reliable solar power and energy storage systems.
agricultural wiring harness

Agricultural Equipment Harness

Custom wire harnesses designed for reliable performance in agricultural machinery and equipment.
industrial wiring harness

Industrial Equipment Harness

Custom wire harnesses engineered for reliable performance in industrial equipment and machinery.
medical equipment wiring harness

Medical Equipment Wire Harness

Custom wire harnesses engineered for reliable performance in medical devices and equipment.
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Electronic Wire Harness

Custom wire harnesses designed for reliable connections in electronic devices and equipment.

E-Bike Wire Harness

Custom wire harnesses built for dependable performance in electric motorcycles and e-bikes.

Your Reliable OEM Wire Harness Manufacturing Partner

XSD Harness works with OEM customers who need customized wiring products manufactured to their own designs and specifications.

We understand the importance of:

  • Consistent quality
  • Stable supply
  • Competitive manufacturing costs
  • Production flexibility
  • Reliable lead times
  • Clear communication
  • Confidentiality
  • Long-term cooperation

Our goal is not simply to manufacture one order.

We aim to become a reliable extension of your supply chain, supporting your wiring requirements from initial development through ongoing production.

Quality Control at Every Stage of Production

Quality Control

A reliable wire harness requires more than simply connecting wires and terminals. Proper material selection, accurate assembly, secure crimping, and thorough electrical testing are all essential to product performance.

At XSD Harness, quality control is integrated into the manufacturing process.

Our inspection procedures include:

Incoming Material Inspection

Materials and components are checked according to project requirements before entering production.

First Article Inspection

Initial assemblies are reviewed to confirm that the production process meets the approved specifications.

Crimp Quality Inspection

Crimped terminals are checked to verify proper connection and mechanical integrity.

Pull Testing

Pull-force testing can be performed to evaluate the strength and reliability of wire-to-terminal connections.

Dimensional Inspection

Critical dimensions, wire lengths, stripping lengths, and assembly configurations are checked against customer specifications.

Continuity Testing

Electrical testing helps verify that circuits are correctly connected and free from open or incorrect connections.

Final Inspection

Finished harnesses are visually and functionally inspected before shipment to ensure they meet the agreed requirements.

Our quality objective is simple:

The right materials. The right connections. The right performance.

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Certifications

XSD Harness is committed to quality and consistency and proudly holds ISO 9001&IATF 16949 certification as a manufacturer of high-quality electrical wiring harnesses and cables built to customer specifications. 

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FAQs

XSD Harness manufactures custom wire harnesses and cable assemblies for a wide range of applications, including automotive, electric motorcycles and e-bikes, agricultural machinery, industrial equipment, medical equipment, solar and energy storage systems, battery systems, robotics, and other OEM applications.

Yes. XSD can manufacture custom wire harnesses based on 2D drawings, 3D CAD files, wiring diagrams, BOMs, technical specifications, or physical samples. Our engineering team can review your requirements and develop the manufacturing process accordingly.

It depends on your requirement, normally one piece.

This depends on the complexity of the wiring harness. Generally, it takes 3 days for a simple one, while for a more complex one, it takes 7 days.

XSD operates a 10,000 m² manufacturing facility with a production capacity of up to 5 million wires per month. Our production resources allow us to support both customized projects and ongoing OEM volume requirements.

Our manufacturing capabilities include automatic wire cutting and stripping, terminal crimping, wire twisting, injection molding, connector assembly, heat shrink processing, wire bundling, labeling, and custom fixture-assisted assembly. Integrating these processes helps us maintain better control over production quality and consistency.

Depending on the project requirements, we provide continuity testing, insulation and withstand voltage testing, pull-force testing, aging testing, salt spray testing, flame testing, and RoHS & REACH-related testing. Testing procedures can be customized according to customer specifications.

Yes. XSD Harness operates under ISO 9001 and IATF 16949 quality management systems. We also have UL and VDE-related capabilities for applicable products and customer requirements.

Yes. Our wire harnesses are manufactured according to each customer’s application requirements. Wire type and length, terminals, connectors, branch configurations, labels, protective materials, heat shrink tubing, and other components can be customized according to the approved design.

You can provide a 2D drawing, wiring diagram, BOM, 3D CAD file, technical specification, or physical sample. If some information is not yet available, you can also send us your initial design or requirements, and our engineering team can review the project and advise what additional information is needed.

We are your trusted leader in manufacturing electrical wire harnesses and custom cables