Custom Wire Harness Manufacturer
Nangudi manufactures custom wire harnesses for OEM equipment manufacturers that need organized wiring, stable quality, engineering support, controlled production, and reliable electrical testing.
- Built to drawings, BOMs, samples, or connector specifications
- Custom wire harness assemblies for OEM equipment projects
- Engineering review before production
- Prototype, pilot run, and mass production support
- 100% electrical continuity testing before shipment
20+
Years Experience
400+
Staff On Site
15,000㎡
Facility Size
100%
Electrical Testing
Prototype to
Mass Production
Scalability
ISO/IATF
Related
Quality System Support
Custom Wire Harnesses Built for OEM Equipment Projects
A wire harness is an organized assembly of wires, terminals, connectors, labels, sleeves, and protection materials designed to route power, signal, or data inside equipment. Nangudi builds custom wire harnesses according to customer drawings, BOMs, samples, connector specifications, pinout, wire length, labeling, routing, and application requirements.
Wire harnesses organize and protect multiple wires or circuits inside equipment. They help simplify installation, reduce wiring errors, and improve serviceability. Nangudi supports custom wire harness assembly for OEM projects, offering build-to-print manufacturing and engineering review before production. Customers can provide drawings, BOMs, samples, photos, or early-stage wiring requirements.
Wire Harness Specifications
Manufacturing capabilities based on specific project requirements.
| Item | Options / Capabilities |
|---|---|
| Product Type | Custom wire harnesses, wire harness assemblies, connector wire harnesses, waterproof wire harnesses, overmolded wire harnesses, battery wire harnesses, power wire harnesses, control wire harnesses, industrial wire harnesses |
| Build Method | Built to drawings, BOMs, samples, connector specifications, wiring diagrams, or customer project requirements |
| Connector Options | Molex, JST, M12, IDC, D-Sub, RJ45/modular, circular connectors, FAKRA, Anderson, customer-specified connector systems, or approved alternatives |
| Wire / Cable Type | Single wires, multi-core cables, ribbon wires, shielded wires, power wires, signal wires, control wires, and application-specific wiring types |
| Wire Gauge | Project-specific wire gauges selected according to current, voltage, signal, mechanical, routing, and application requirements |
| Harness Features | Cutting, stripping, crimping, soldering, labeling, sleeving, taping, bundling, shielding, connector assembly, kitting, packaging |
| Protection Options | Heat shrink tubing, braided sleeve, corrugated tube, PVC sleeve, tape wrapping, strain relief, sealing support, and project-specific protection materials |
| Labeling / Identification | Heat-shrink labels, printed labels, wire markers, color coding, circuit identification, barcode labels when required |
| Testing | Continuity testing, pinout verification, visual inspection, crimping quality control, pull force testing support, and functional testing when required |
| Documentation Support | Inspection records, test reports, material declarations, traceability information, and project-specific documentation when required |
| Production Stage | Prototype, small batch, pilot run, and mass production |
| Compliance Support | RoHS / REACH support when required; ISO 9001 / IATF 16949 / ISO 13485 related manufacturing support |
Need a custom wire harness specification?
Custom Wire Harness Product Types
Nangudi manufactures various wiring solutions based on specific OEM equipment requirements, from simple point-to-point wiring to complex multi-branch routing.
Custom Wire Harness Assemblies
Built for equipment wiring, internal routing, control systems, power distribution, signal transmission, and organized installation inside OEM products.
Connector Wire Harnesses
Wire harnesses assembled with customer-specified connectors such as Molex, JST, M12, IDC, D-Sub, RJ45/modular, circular connectors, FAKRA, or approved alternatives.
Power Wire Harnesses
Harnesses for power distribution, battery systems, control cabinets, industrial machinery, renewable energy equipment, and equipment-level power routing.
Control Wire Harnesses
Wire harnesses for control panels, sensors, actuators, switches, fans, motors, embedded controllers, and equipment control circuits.
Waterproof / Protected Wire Harnesses
Designed for projects requiring strain relief, sealing support, moisture protection, sleeving, tubing, or tape wrapping. IP-rated sealing supported when defined.
Overmolded Wire Harnesses
Wire harnesses with overmolding support for strain relief, connector protection, improved durability, or application-specific cable exit design.
Prototype Wire Harnesses
Sample and prototype builds for early-stage OEM projects, engineering validation, fit checks, wiring layout review, and production feasibility assessment.
Integrated Wiring Assemblies
Wire harness integration with selected components such as sensors, switches, displays, fans, pumps, control boards, or customer-specified project parts when required.
Common Challenges in Wire Harness Projects
Engineering and sourcing managers often face these issues during wiring projects. Here is how Nangudi provides support.
Drawings are incomplete or not production-ready
Many OEM projects start with early drawings, photos, or samples.
Connector availability affects lead time and cost
Connector brands, part numbers, and approved alternatives may affect project timing.
Incorrect pinout or loose terminals cause field failures
Wire harness failures often come from incorrect pinout, loose terminals, or inconsistent crimping.
Harness routing inside equipment is difficult
Complex internal structures make standard wiring hard to install and maintain.
Prototype-to-production transfer is not controlled
Changes made during prototyping are often lost when moving to mass production suppliers.
Too many suppliers increase project complexity
Managing separate vendors for wires, connectors, sensors, and assembly creates supply chain bottlenecks.
Why OEM Buyers Choose Nangudi for Wire Harness Manufacturing
Providing controlled manufacturing, engineering support, and reliable testing for complex equipment wiring projects.
Engineering Review Before Production
We review drawings, BOMs, connector options, wire specifications, pinout, routing, labeling, and manufacturability before production starts.
Built to Your Project Requirements
Nangudi builds custom wire harnesses according to drawings, samples, connector specifications, wire length, labeling, protection, and testing needs.
Prototype to Mass Production
Support for prototype builds, small batches, pilot runs, and stable mass production helps OEM customers validate and scale their wire harness projects.
Controlled Manufacturing Process
Wire cutting, stripping, crimping, soldering, connector assembly, labeling, inspection, and testing are managed through controlled production procedures.
100% Electrical Continuity Testing
Each wire harness can be tested for continuity and pinout verification before shipment, with additional testing support when required.
Supply Chain & Component Integration
Nangudi can source connectors, wires, terminals, sleeves, labels, and selected project components based on customer BOM requirements.
Have a drawing or sample?
How We Manufacture Custom Wire Harnesses
A controlled process from initial requirement review to final electrical testing and packaging.
Requirement Review
Customers send drawings, BOMs, samples, photos, connector specifications, wire length, pinout, quantity, and application requirements.
Engineering & DFM Check
Nangudi reviews manufacturability, connector options, wire specifications, routing, labeling, testing requirements, and production risks.
Material Preparation
Wires, connectors, terminals, sleeves, labels, protection materials, and selected project components are prepared.
Cutting & Crimping
Wire processing and terminal crimping are performed according to production instructions and inspection requirements.
Assembly & Protection
Harnesses are routed, bundled, labeled, sleeved, taped, protected, or overmolded according to project needs.
Testing & Inspection
Continuity testing, pinout verification, visual inspection, crimping checks, and project-specific testing are performed.
Packaging & Delivery
Finished wire harnesses are packed according to customer requirements and prepared for prototype, pilot run, or mass production delivery.
Quality Control for Wire Harness Manufacturing
Nangudi implements controlled inspection points throughout the wire harness manufacturing process.
Key Quality Control Points
- Incoming material inspection
- Wire cutting and stripping check
- Terminal crimping inspection
- Pull force testing support when required
- Connector insertion and pinout verification
- Labeling and routing check
- 100% electrical continuity testing
- Visual inspection
- Functional testing when required
- Final inspection before shipment
| Test / Inspection Item | Purpose | When Applied |
|---|---|---|
| Continuity Testing | Confirms correct electrical connection | Standard before shipment |
| Pinout Verification | Confirms circuit and connector mapping | Standard for multi-circuit harnesses |
| Visual Inspection | Checks routing, labels, terminals, sleeves | Standard |
| Crimping Quality | Helps verify terminal crimp consistency | Production control |
| Pull Force Testing | Supports crimp validation | When required |
| Functional Testing | Simulates project-specific operation | When required |
Applications for Custom Wire Harnesses
Providing internal wiring solutions for diverse OEM equipment across multiple sectors.
Industrial Equipment
Wire harnesses for control panels, PLC systems, CNC equipment, sensors, motors, and industrial machinery.
Robotics & Automation
Custom wire harnesses for AMR, AGV, robotic systems, automation devices, motion control, and smart manufacturing.
Medical Devices
Custom medical wire harnesses for projects requiring stable quality, traceability support, and controlled production.
Renewable Energy
Wire harness solutions for energy storage systems, solar equipment, battery systems, and power modules.
Automotive & Transport
Custom automotive wire harnesses, battery wire harnesses, FAKRA-related wiring, and transportation equipment wiring.
Commercial Equipment
Wire harnesses for equipment integrating displays, sensors, fans, switches, pumps, HVAC, and connected devices.
Telecom & Data
Wire harnesses and connector wiring for communication equipment, data transmission devices, and control modules.
Electronic Devices
Internal wiring harnesses for displays, I/O interfaces, device connection, and compact equipment assemblies.
What Is a Wire Harness?
Typical Components of a Wire Harness:
- Wires (single or multi-core)
- Connectors
- Terminals / Pins
- Labels / markers
- Sleeves / tubes / tapes
- Branches and routing paths
- Protection materials
- Testing and documentation
Wire Harness vs. Cable Assembly: What Is the Difference?
Understanding the distinction between these two common wiring solutions.
| Item | Wire Harness | Cable Assembly |
|---|---|---|
| Main Purpose | Organizes and routes multiple wires or circuits inside equipment | Connects devices, boards, power, signal, data, or control interfaces |
| Structure | Multiple wires, terminals, connectors, labels, sleeves, and routing paths | One or more cables with connectors, shielding, overmolding, or protection |
| Typical Use | Equipment wiring, control panels, internal routing, power distribution | External or internal interconnect, data transfer, power connection, signal transmission |
| Protection | May use tape, sleeves, tubing, conduit, or routing protection | May use jacket, shielding, overmolding, strain relief, waterproofing support |
| Customization | Wire length, branch length, pinout, connector type, labeling, routing, protection | Cable type, connector type, shielding, length, overmolding, performance requirements |
| Best For | Complex multi-wire equipment wiring | Specific cable-to-device or device-to-device connection |
In many OEM projects, wire harnesses and cable assemblies are used together. Nangudi can manufacture wire harnesses and related cable assemblies based on drawings, BOMs, samples, or project requirements.
Not sure which wiring solution you need?
Send Us Your DrawingHow to Choose a Wire Harness Manufacturer
1. Can the supplier build to drawings, BOMs, samples, or early-stage requirements?
Flexibility in accepting different types of project documentation is crucial for early-stage OEM projects.
2. Does the supplier provide engineering review before production?
A DFM check helps identify routing, connector, or pinout issues before they cause field failures.
3. Can the supplier support prototype, pilot run, and mass production?
Working with one supplier through all stages ensures design consistency and reduces transfer risks.
4. Does the supplier have controlled crimping, assembly, and testing procedures?
Consistent quality relies on standardized operating procedures and regular equipment calibration.
5. Can the supplier verify pinout and continuity before shipment?
100% electrical testing is essential to prevent short circuits or incorrect connections.
6. Can the supplier support connector sourcing and alternatives when needed?
Supply chain capability helps manage lead times and cost when original connectors are unavailable.
7. Can the supplier provide inspection records, test reports, or material documentation when required?
Traceability and documentation are critical for medical, automotive, and industrial compliance.
8. Does the supplier understand OEM equipment applications and supply chain requirements?
A manufacturer focused on B2B OEM projects understands the importance of stability and long-term support.
Nangudi supports these requirements through engineering review, wire processing, connector assembly, controlled production, 100% electrical continuity testing, supply chain integration, and OEM project support.
Compare your project requirements with our capabilities.
Talk to an EngineerWhat to Send Us for a Faster Wire Harness Quote
The more complete your information is, the faster Nangudi can review manufacturability and provide an accurate quotation.
- Drawing or wiring diagram
- BOM or component list
- Sample photos or physical samples
- Connector brand and part number
- Wire type, gauge, color, and length
- Pinout and circuit requirements
- Branch length and routing requirements
- Labeling or marking requirements
- Sleeve, tube, tape, or protection requirements
- Overmolding or waterproofing requirements if any
- Testing requirements
- Estimated quantity & Target lead time
- Shipping country
Direct Contact
Technical Project Contact:
Phone / WhatsApp:
+86 18665156668
Factory:
No.31, Longyan Road 7, Longyan community, Humen Town, Dongguan City, Guangdong Province, China 523910.
WhatsApp UsRequest a Quote
Send us your drawings, BOMs, or requirements. Nangudi will review your project and provide quotation, lead time, and manufacturability feedback.
Wire Harness FAQs
Common questions about our custom wire harness manufacturing capabilities.
1. What is a wire harness?
2. What is a custom wire harness?
3. What is the difference between a wire harness and a cable assembly?
4. Can Nangudi manufacture wire harnesses based on drawings or samples?
5. Do you support prototype wire harnesses?
6. What testing is performed before shipment?
7. Can you help with connector selection?
8. What industries use custom wire harnesses?
Start Your Custom Wire Harness Project with Nangudi
Whether you need a prototype wire harness, a build-to-print wire harness, or ongoing OEM production support, Nangudi can review your requirements and provide practical manufacturing feedback before production starts.
