OEM Wiring Harness
Manufacturing
IATF 16949 Certified
As a leading custom wiring harness manufacturer, OurPCB makes OEM wiring harnesses that meet incredibly strict automotive and aerospace standards. Our IATF 16949-certified factory creates custom wire harness assemblies rated from 12V to 800V systems. This supports vehicle applications, like traditional automotive and high-voltage electric systems.
We blend advanced automated assembly with full testing protocols. OurPCB does this to make sure that there is zero-defect shipping for your important applications.
What are OEM Wiring Harnesses?
OEM wiring harnesses are precisely engineered groupings of wires, cables, connector assemblies, and protective materials. They are made to reach the original equipment manufacturer’s specifications. These fully assembled electrical systems send out power and data signals throughout vehicle networks, machinery, and electronic systems. It does this while handling environmental threats. These can be vibration, temperature extremes, abrasion, and so much more.
Key Applications Across Industries
Modern OEM harness assemblies serve critical functions in automotive engine management, infotainment systems, safety networks, and high-voltage battery connections in electric vehicles. Leading automotive wiring harness manufacturers ensure these systems meet stringent industry standards. Aerospace applications require AS50881-compliant harnesses with enhanced fire resistance and reduced weight for aircraft electrical systems. Industrial machinery depends on specialized harnesses rated for continuous operation in harsh manufacturing environments where original equipment reliability is essential.
Advanced Material Technologies
| Material Type | Applications | Temperature Range | Key Benefits |
|---|---|---|---|
| Cross-linked Polyethylene | High-temp engines | -55 °C to 150 °C | Superior thermal stability |
| Teflon® Insulation | Aerospace/Military | -70 °C to 260 °C | Chemical resistance |
| Aluminum Conductors | Weight reduction | -40 °C to 125 °C | 40% weight savings |
| PVC Insulation | General automotive | -40 °C to 105 °C | Cost-effective protection |
What are the Benefits of OEM Wiring Harness Manufacturing?
OEM wiring harness manufacturing delivers superior reliability, performance, and compliance through precision engineering and certified quality processes that eliminate the need for aftermarket replacement parts.
- IATF 16949 automotive certification guarantees consistent manufacturing processes and full traceability documentation for genuine OEM quality
- IPC/WHMA-A-620 Class 3 compliance delivers aerospace-grade reliability with zero-defect assembly standards for critical applications
- 12V to 800V voltage range accommodates traditional automotive through high-voltage electric vehicle systems with proper wire gauge selection
- Smart harness integration with embedded sensors enables real-time condition monitoring and predictive maintenance for electrical system optimization
- Pick-and-place automation with vision verification ensures 98.7% precision component placement accuracy for metal terminals and connector assembly
- Automated wire cutting and stripping maintains ±0.2 mm tolerance for professional assembly quality with consistent crimp connections
- IP67 and IP69K-rated assemblies withstand high-pressure washing and complete dust protection for harsh operating environments
- Flame retardant overmolding reduces electrical fire risk and prevents moisture ingress through advanced seal technologies
test
Why Choose OurPCB for OEM Wiring Harness Manufacturing?
OurPCB combines advanced manufacturing capabilities with comprehensive certifications to deliver superior OEM harness solutions for demanding applications across automotive, aerospace, and industrial sectors.
Factory-Ready for Ultra-Fine Assembly
Our dual 10,000 m² PCB assembly houses in Shenzhen and Shijiazhuang are equipped with high-speed SMT assembly lines capable of placing fine-pitch parts with ±25 µm tolerance.
Each line includes temperature- and humidity-controlled environments, active anti-static systems, and vacuum transport for handling thin or flex printed circuits.
Certified for High-Reliability Fine-Pitch Workflows
We are fully certified to ISO 9001, IATF 16949, and IPC-A-610 Class 2 & 3, supporting applications where fine-pitch PCB assembly must meet elevated acceptance criteria for solder joint geometry, lead coplanarity, and component body clearance.
Our QA workflows are built to handle fine-pitch PCBs requiring zero solder bridging and uniform joint fillets across dense arrays.
Factory-Ready for Ultra-Fine Assembly
Our dual 10,000 m² PCB assembly houses in Shenzhen and Shijiazhuang are equipped with high-speed SMT assembly lines capable of placing fine-pitch parts with ±25 µm tolerance.
Each line includes temperature- and humidity-controlled environments, active anti-static systems, and vacuum transport for handling thin or flex printed circuits.
Certified for High-Reliability Fine-Pitch Workflows
We are fully certified to ISO 9001, IATF 16949, and IPC-A-610 Class 2 & 3, supporting applications where fine-pitch PCB assembly must meet elevated acceptance criteria for solder joint geometry, lead coplanarity, and component body clearance.
Our QA workflows are built to handle fine-pitch PCBs requiring zero solder bridging and uniform joint fillets across dense arrays.
Inspection Systems for High Pin Count Devices
All assemblies involving ball pitch under 0.5 mm, QFN, or PoP packages undergo X-ray inspection, SPI, and AOI with 15 µm resolution optics.
We detect voids, open leads, insufficient solder, lifted terminations, and hidden shorts. This inspection process is a requirement for successful assembly when working with components that provide no visible solder access.
Engineering Review for Pitch-Specific Risks
Every fine-pitch electronic assembly receives a DFM and DFA review focused on stencil coverage, aperture tuning, pcb design limitations, and routing near fine-pitch ICs.
We assist in verifying pad design, thermal pad exposure, and via escape planning, important for high I/O packages like BGA and chip scale layouts where misalignment or solder blockage can compromise yield.
Turnkey Component Sourcing and Lot Control
We offer full assembly component sourcing through partners like Digi-Key, Mouser, and WPG, including traceable lots for hard-to-find or moisture-sensitive electronic components.
Components are stored under MSL-compliant conditions, with drying cabinets and vacuum packaging for all incoming fine-pitch parts.
What are Technical Standards & Certifications for OEM Wiring Harnesses?
Technical standards and certifications govern every aspect of OEM wiring harness manufacturing from design through final test validation. These industry requirements ensure that harnesses are manufactured to meet the demanding performance, safety, and reliability standards required for automotive, aerospace, and industrial applications.
Automotive Quality Standards
IATF 16949 automotive quality management certification ensures consistent manufacturing processes with full traceability from raw materials through final assembly and test procedures. This standard mandates statistical process control, continuous improvement protocols, and comprehensive documentation systems that meet automotive industry audit requirements. Our certified processes address the demanding requirements of modern vehicles where electrical system failures can impact safety and performance.
Aerospace & Military Compliance
IPC/WHMA-A-620 Class 3 certification establishes the highest reliability standards for wire harness assembly, particularly critical for aerospace and military applications where failure is not acceptable. AS50881 Enhanced Electrical Wiring Interconnection Systems (EWIS) standards govern aerospace applications, specifying fire-resistant materials, reduced weight requirements, and enhanced durability under extreme environmental conditions with complete socket and plug reliability.
Environmental & Safety Certifications
ISO 9001:2015 quality management certification provides the foundation for consistent manufacturing excellence across all product lines. RoHS compliance ensures environmental responsibility through elimination of hazardous substances, while UL and CSA certifications validate safety performance for North American market applications including car or truck installations.
What are OurPCB’s Specialized Manufacturing Capabilities?
OurPCB offers advanced manufacturing services that distinguish our OEM wire solutions from standard assembly providers through specialized techniques and custom engineering approaches. Wire marking and identification systems provide clear component labeling for maintenance and troubleshooting applications. Custom covering options include split-loom tubing, braided sleeving, tape wrapping, and heat-shrink protection tailored to specific environmental requirements.
Custom Design & Engineering Services
Our engineering team develops custom fixtures and tooling for complex harness configurations that require precise routing and connector positioning for optimal vehicle installation. Splicing services accommodate field modifications and repair applications while maintaining original electrical specifications. CAN bus integration expertise ensure optimal data transmission performance with minimal wire count requirements for modern wiring systems.
Millions of business and innovators use OurPCB
- One-stop PCBA Services (PCB Manufacturing + Components Sourcing + Assembly)
- SMT Assembly + THT Assembly, Single/double-sided Assembly Mixed PCB Assembly
- BGA Rework
- 60,000 Chips/Hour
- Down to 01005/0210 Size
- Accuracy<±40μm
- Min. QFN Pin Width/Space: 0.15mm/0.25mm
- Min. BGA Diameter/Space: 0.2mm/0.35mm
- Rigid, Flex, HDI, & High-speed Power Boards
- Up to 64 Layers
- 60GHz High Frequencies
- Min. Trace Width/Spacing: 1.8mil/1.8mil
- AOI, X-ray, ICT & FCT Testing
- Controlled Impedance
- ISO 9001, ISO 13485, ISO 14001, IATF 16949, IPC-A-610, UL Certified
- Automotive, Medical, & Military-grade PCBA Manufacturing
Technical Capabilities
OurPCB operates advanced manufacturing equipment configured for precision OEM cable and wire harness production with complete quality control throughout the process. Automated wire cutting and stripping systems maintain ±0.2 mm dimensional tolerance, while pick-and-place automation incorporates vision verification for accurate component placement. Temperature-controlled soldering stations ensure consistent joint quality, and automated testing stations perform comprehensive electrical validation including continuity, insulation resistance, and HiPot testing protocols.
Environmental testing capabilities include thermal chambers for temperature cycling validation, vibration tables for frequency response testing, and IP rating validation chambers for dust and water ingress testing. Quality documentation systems provide complete traceability with statistical process control monitoring that ensures consistent manufacturing performance across all production runs.
Partner with OurPCB for Superior OEM Wiring Harness Manufacturing
OurPCB delivers the technical expertise, certified quality processes, and advanced manufacturing capabilities required for mission-critical OEM electrical applications. Our comprehensive certifications and smart harness technologies provide the reliability and innovation your projects demand without requiring aftermarket parts or replacement components.
Contact our engineering team today to discuss your OEM wire harness requirements and discover how our turnkey manufacturing solutions can streamline your production while delivering superior quality and reliability.
Capabilities & Services
- Wire Gauge: 40AWG-120mm²
- Production Capacity: 10,000 pieces/hour
- Wire Cutting Service
- Wire Stripping Service
- Wire Marking Service
- Label Types
- Wire Ends Treatment
Custom Wire/Cable Service:
- Wire/Cable types
- Wire gauge
- Wire/Cable length
- Insulation/Jacket color
- Core numbers etc.
Custom Cable Assembly Capacities:
All kinds of cable assemblies including
- Electrical cable assembly
- Coaxial cable assembly
- Multi-core cable assembly
- Connector to board cable assembly
- Automobile communication cable assembly
- Power transmission cable assembly
More Custom Wire Harness ManufacturingService
Our custom wire harness manufacturing services cover a wide range of industries and specialized needs. From automotive and truck harnesses built for reliability under demanding conditions to marine solutions designed to withstand harsh environments, we ensure durability and precision. We also offer OEM harness manufacturing tailored to exact specifications, as well as tractor harnesses engineered for agricultural efficiency. For projects that require flexibility, our custom wire harness solutions provide tailored configurations to meet unique applications. With expertise across multiple sectors, we deliver consistent quality, performance, and long-term dependability.
Mon-Fri: 24 hours,
Sat: 9am-6pm, GMT+8
Reach us at
[email protected]
24 hours online
+86-199-30589219
Mon-Fri: 24 hours,
Sat: 9am-6pm, GMT+8
OEM Wiring Harness Manufacturing FAQs
What voltage and current ratings can your OEM wiring harnesses handle?
Our manufacturing capabilities support voltage ratings from 12V traditional automotive systems up to 800V high-voltage electric vehicle applications, with current capacity ranging from 0.5A for signal circuits to 300A for high-power battery interconnections. We use appropriate wire gauges, insulation materials, and connector specifications to ensure safe operation across this complete range, with proper derating factors applied for temperature and environmental conditions.
How do you ensure compliance with automotive and aerospace quality standards?
We maintain IATF 16949 automotive certification and IPC/WHMA-A-620 Class 3 certification through continuous training, regular audits, and strict adherence to documented procedures that govern every aspect of manufacturing from incoming inspection through final testing. Our quality management system includes statistical process control, corrective action protocols, and comprehensive documentation that provides full traceability and meets automotive industry audit requirements.
What specialized services distinguish your harness manufacturing from competitors?
Our unique capabilities include smart harness technology with embedded sensors for real-time condition monitoring, lightweight solutions using aluminum conductors that reduce weight by 40%, and multi-material construction integrating copper, aluminum, and fiber optic technologies. We also provide wire marking systems, custom covering options, splicing services, chassis mounting solutions, and blueprint-based reproduction wiring harnesses that competitors typically don’t offer as integrated services.
Ready to Validate Your PCB Assembly
With Reliable PCB Testing Services?
Request a quote and get a custom testing plan tailored to your design, BOM, and inspection needs. We provide PCB testing services with full traceability, calibrated measurement systems, and certified workflows for Class II and Class III assemblies.
