Automotive wire harnesses are a vehicle’s electrical nervous system, routing power and signals to every component. Without them, even the most advanced cars won’t run.
As vehicles continue to evolve with increasingly sophisticated electronics, advanced safety systems, and complex entertainment features, selecting the right wire harness manufacturer becomes a critical decision for automotive producers. Today’s harnesses must handle everything from basic lighting to advanced driver assistance systems and electric vehicle battery management.
Below, we compare 14 automotive wire harness manufacturers, from global Tier 1 suppliers to smaller specialists.
Every company here makes automotive wire harnesses, and all details come from their own websites. They’re listed alphabetically, not ranked. Wiringo, which runs this site, is one of them.
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Automotive Wire Harness Manufacturers Compared
| Company | Headquarters | Founded | Certifications |
| Coroplast (WeWire) | Wuppertal, Germany | 1928 | IATF 16949 (all Coroplast Group locations) |
| Dräxlmaier Group | Vilsbiburg, Germany | 1958 | IATF 16949 (certificates published per site) |
| Fujikura Ltd. | Tokyo, Japan | 1885 | Not listed |
| Kromberg & Schubert | Abensberg, Germany | Not listed | IATF 16949 (all plants), ISO 14001:2015 |
| Kyungshin | Incheon, South Korea | 1974 | Not listed |
| Lear Corporation | Not listed | Not listed | Not listed |
| LEONI AG | Nuremberg, Germany | 1917 | IATF 16949 (Wiring Systems sites) |
| Motherson Group (including PKC Group) | Not listed | 1975 | Not listed |
| Renhotec | Wuhan, China | Not listed | IATF 16949 (Dongguan factory), ISO 9001 |
| Sumitomo Wiring Systems | Yokkaichi, Mie, Japan | 1917 | Not listed |
| Versigent (formerly part of Aptiv) | Schaffhausen, Switzerland | Not listed | Not listed |
| Wiringo | Shijiazhuang, Hebei, China (head office and factory) | 2016 | ISO 9001:2015, ISO 13485:2016, IATF 16949, IPC/WHMA-A-620E CIS (personnel) |
| Yazaki Corporation | Tokyo, Japan | 1941 | Not listed |
| YURA Corporation | Seongnam, South Korea | 1993 | Not listed |
Coroplast (WeWire)
WeWire is Coroplast’s harness brand and covers harness design, 3D routing, prototypes and series production.
- Location: Wuppertal, Germany
- Founded: 1928
- Products: Automotive wiring harnesses, wheel-arch harnesses, injection-moulded parts
- Industries served: Automotive, industrial
- Certifications: IATF 16949 (all Coroplast Group locations)
- Services: Installation space analysis, 3D routing, prototyping, series production
- Website: www.wewire-harness.com
Dräxlmaier Group
A family-owned supplier, Dräxlmaier builds wiring harness systems, including high-voltage systems, alongside vehicle interiors.
- Location: Vilsbiburg, Germany
- Founded: 1958
- Products: Wiring harness systems, including high-voltage systems; vehicle interiors; e-mobility components
- Industries served: Automotive
- Certifications: IATF 16949 (certificates published per site)
- Website: www.draexlmaier.com
Fujikura Ltd.
Founded in 1885, Fujikura makes automotive harnesses, connectors and junction boxes next to its telecom business.
- Location: Tokyo, Japan
- Founded: 1885
- Products: Automotive wire harnesses, connectors, junction boxes
- Industries served: Automotive, telecommunications, electronics, energy
- Website: www.fujikura.co.jp/en
Kromberg & Schubert
Kromberg & Schubert says all of its plants are IATF 16949 certified and builds wiring systems in 21 countries.
- Location: Abensberg, Germany
- Products: Wiring systems, cable solutions, plastic components
- Industries served: Automotive
- Certifications: IATF 16949 (all plants), ISO 14001:2015
- Services: Development, production, quality and logistics
- Website: www.kromberg-schubert.com
Kyungshin
Kyungshin has made automotive harnesses in South Korea since 1974 and now also builds high-voltage harnesses.
- Location: Incheon, South Korea
- Founded: 1974
- Products: Automotive wiring harnesses, high-voltage wiring harnesses, junction blocks, connectors
- Industries served: Automotive
- Website: www.kyungshin.co.kr
Lear Corporation
Lear’s E-Systems business covers wire harnesses, connection systems and high-voltage battery connections.
- Products: Wire harnesses, connection systems, high-voltage battery connections (E-Systems)
- Industries served: Automotive
- Website: www.lear.com
LEONI AG
LEONI supplies both low-voltage harnesses and high-voltage wiring systems for cars and commercial vehicles.
- Location: Nuremberg, Germany
- Founded: 1917
- Products: Low-voltage wiring harnesses, high-voltage wiring systems, high-voltage battery solutions, power and data distribution
- Industries served: Automotive, commercial vehicles
- Certifications: IATF 16949 (Wiring Systems sites)
- Website: www.leoni.com
Motherson Group (including PKC Group)
Motherson entered the harness business in 1986; PKC Group and, since 2026, the former Nexans Autoelectric are part of its wiring harness division.
- Founded: 1975
- Products: Wiring harnesses for passenger cars and commercial vehicles
- Industries served: Automotive and other sectors
- Website: www.motherson.com
Renhotec
Renhotec specializes in high-voltage connectors, cables and harnesses for electric vehicles and energy storage.
- Location: Wuhan, China
- Products: High-voltage connectors and cables, high-voltage wiring harnesses for electric vehicles
- Industries served: Electric vehicles, energy storage, industrial
- Certifications: IATF 16949 (Dongguan factory), ISO 9001
- Website: www.renhotecev.com
Sumitomo Wiring Systems
Automotive wiring harnesses are Sumitomo Wiring Systems’ core business, with operations in more than 30 countries.
- Location: Yokkaichi, Mie, Japan
- Founded: 1917
- Products: Automotive wiring harnesses, automotive wires, harness components, electronics, HEV/EV products
- Industries served: Automotive
- Website: www.sws.co.jp/en
Versigent (formerly part of Aptiv)
Versigent is Aptiv’s former electrical distribution business, spun off as a separate company in 2026.
- Location: Schaffhausen, Switzerland
- Products: Low- and high-voltage electrical architectures, high-voltage wire harnesses and cable assemblies
- Industries served: Automotive, commercial vehicles
- Website: www.versigent.com
Wiringo
Wiringo, which runs this site, builds custom automotive harnesses and cable assemblies in Shijiazhuang and holds IATF 16949.
- Location: Shijiazhuang, Hebei, China (head office and factory)
- Founded: 2016
- Products: Custom automotive wire harnesses and cable assemblies, from prototypes to volume production
- Industries served: Automotive, industrial automation, medical devices, marine, agricultural equipment
- Certifications: ISO 9001:2015, ISO 13485:2016, IATF 16949, IPC/WHMA-A-620E CIS (personnel)
- Services: Design support, prototyping, electrical testing; 5,000 m² factory
- Website: www.wiringo.com
Yazaki Corporation
Yazaki started with automotive wire harnesses and has since added instruments, gas and air-conditioning equipment, and solar products.
- Location: Tokyo, Japan
- Founded: 1941
- Products: Automotive wire harnesses; also instrumentation, gas, air-conditioning and solar equipment
- Industries served: Automotive, energy, building equipment
- Website: www.yazaki-group.com
YURA Corporation
YURA’s main customers are Hyundai and Kia, and it makes harnesses, electrical control modules and high-voltage connectors.
- Location: Seongnam, South Korea
- Founded: 1993
- Products: Wiring harnesses, electrical control modules, high-voltage connectors, charging couplers
- Industries served: Automotive
- Website: www.yuracorp.co.kr
How to choose an automotive wire harness manufacturer
When selecting a wire harness partner, consider these factors:
- Quality testing procedures for each completed assembly, such as automated testing, environmental simulation, and dimensional verification
- Certification compliance (IATF 16949, ISO 14001, ISO 9001, RoHS), ensuring quality materials
- Experience with high-voltage systems for EVs
- Production capacity for both high-volume and specialized production, and global manufacturing locations
- Responsive customer support, transparent communication, and engineering collaboration throughout the design process
- Experience working with leading automotive companies
The right manufacturer should serve as your design and development partner, from concept through production, offering technical expertise tailored to your specific wire harness needs.
Beyond these basics, consider the manufacturer’s financial stability and longevity in the market. Evaluate their innovation roadmap and assess their willingness to adopt new technologies that could benefit your products. Request samples of their previous work to assess craftsmanship, and when possible, visit their facilities to observe production standards firsthand. This should include a proven track record of delivering reliable products on time.
Find the right automotive wire harness partner for your next project
Before you commit, ask each supplier for copies of its certificates, a sample test report and a reference from a customer with a similar project, and get lead times quoted on your actual drawing.
If you’d like Wiringo to quote your project, send us your drawing.
Get Your Free Sample!
Explore our custom services now. Email us at sales@wiringo.com for more details.
