Custom Automotive Wire Harness & Cable Assembly Services

OEM / ODM Turnkey Wire Harness Manufacturing | IATF 16949 Standards

Custom Automotive Wire Harness & Cable Assembly Solutions

From CAD design and rapid prototyping to turnkey mass production. We deliver high-reliability automotive wiring looms, EV high-voltage cables, and custom overmolded assemblies with 100% electrical continuity testing.

100%Continuity & Hi-Pot Tested
3-5 DaysRapid Prototyping
Flexible MOQSmall to Large Batches
Full PPAPLevel 3 Support

Manufacturing Capabilities

6 Core Manufacturing & Engineering Capabilities

A fully integrated in-house chain — from automatic wire processing and crimp-force-monitored termination to custom tooling, overmolding and 100% electrical validation.

Precision Automated Cutting & Stripping

Komax automated processing lines deliver repeatable cut length, strip length and seal application accuracy for every wire in the harness.

FLRY-B / TXL / AVSS · 0.35mm² ~ 25mm²

Automated Terminal Crimping with CFM

Servo crimp presses with real-time Crimp Force Monitoring on every cycle, validated by periodic cross-section analysis and pull-force testing.

100% Crimp Force Monitoring

Ultrasonic Wire Splicing & Overmolding

Ultrasonically welded splices and custom overmolded junctions deliver the low-resistance, high-current joint reliability required by EV and battery harnesses.

EV & Battery Harness Joints

100% Automated Electrical Testing

Computerized continuity test boards verify every circuit and connector cavity — zero open-circuit and zero short-circuit guarantee before shipment.

Zero Open / Short Circuit

Custom Plastic Tooling & Injection Molds

In-house mold design and injection molding for custom connector housings, grommets and backshells with rapid tooling turnaround.

25-Day Rapid Mold Delivery

Protective Looming & Waterproof Sealing

Full protective finishing options: corrugated conduits, braided fiberglass sleeves and adhesive heat-shrink for abrasion, heat and moisture resistance.

Conduit / Braid / Heat-Shrink

Application Sectors

5 Typical Application Fields We Serve

Engineered, tested and documented harness solutions across the most demanding automotive and industrial programs.

01

EV & Battery Management Systems (BMS)

High-voltage and signal harnesses, cell sensing looms and BMS interconnect assemblies.

02

Engine & Powertrain Wiring

High-temperature engine looms, sensor harnesses and injector sub-assemblies.

03

Automotive Lighting & ADAS Sensor Looms

Headlamp, tail lamp and camera / radar / ultrasonic sensor harnesses.

04

Heavy-Duty Truck & Construction Equipment

Rugged, vibration-resistant looms for trucks, trailers and off-road machinery.

05

Custom Industrial & Agricultural Machinery

Control cabinets, telematics and implement wiring for industrial and farm equipment.

Development Process

5-Step Rapid Custom Development Process

A transparent, engineering-driven workflow that takes your drawing from review to serial production dispatch.

1

Drawing & Specification Review

Engineering review of your harness drawing, BOM and connector list against performance and compliance requirements.

24h turnaround for CAD / STEP / PDF

2

DFM Optimization & Component Sourcing

Design-for-manufacture feedback, cost-down suggestions and sourcing of original or equivalent connectors and wire.

DFM Report & BOM Confirmation

3

Rapid Prototyping

Sample harness build on automated lines, fully crimped, assembled and electrically tested for your evaluation.

3-5 days for first article approval

4

Strict Quality & Environmental Testing

Validation of the approved sample under real-world conditions before release to mass production.

Tensile pull force, salt spray, thermal shock

5

Serial Mass Production & Global Dispatch

Volume manufacturing with in-process controls, 100% electrical testing and worldwide shipping with full documentation.

Full PPAP Level 3 & Traceability

IATF 16949 Quality SystemISO 9001 Certified ProcessRoHS / REACH Compliant Materials15+ Years Harness Manufacturing

Get a Quote

Send Your Drawing — Get a Fast RFQ Response

Email your harness drawing or sample photos and our engineering team will reply with a technical review and quotation, usually within 24 hours.

RFQ Checklist

To quote accurately and quickly, please prepare the following information:

  • Harness drawing in PDF / DWG / STEP, or a clear photo of a physical sample
  • Connector part numbers or brands (TE, Molex, Delphi, JAE, Yazaki, etc.)
  • Wire gauge, color code and insulation type (FLRY-B, TXL, AVSS…)
  • Quantity per order and estimated annual volume
  • Operating environment: temperature range, waterproof IP rating, vibration
  • Target price, delivery destination and required lead time
  • Testing & compliance requirements (PPAP Level 3, IATF 16949, UL, RoHS, REACH)
Reply within 24hNDA available on request

Quick RFQ Form

Fill in the form and send it straight to our engineering team.

Drawing files (PDF / DWG / STEP / Excel) can be emailed directly to [email protected] or sent via WhatsApp — we will attach them to your RFQ record.

Chat on WhatsApp

Ready to start your custom harness project?

Send your CAD drawing or sample today — get a DFM review and quotation within 24 hours.