Custom Made Automotive Wiring Harness | EV & ADAS Solutions

Custom made automotive wiring harnesses are the backbone of modern vehicles, facilitating communication and power distribution across every system—from engine controls to infotainment. At Dongguan Nangu Di Electronics, we have perfected the art and science of harness manufacturing for over 20 years, serving as a trusted partner to automotive OEMs and Tier-1 suppliers worldwide. Our journey began in 2006 with a mission to provide top-tier custom solutions, and today we stand as a national high-tech enterprise and a "Little Giant" in Guangdong Province, reflecting our extraordinary growth and commitment to innovation.
Our production facilities, spanning 12,000m² across two bases in Humen, Dongguan, and supported by a Hong Kong subsidiary, house over 350 dedicated professionals. Among them, 35 are highly experienced R&D engineers who bring decades of collective knowledge to each project. We hold ISO9001, ISO13485, IATF16949, and UL certifications, guaranteeing that our manufacturing processes meet the highest international standards. Our quality management system is built on a philosophy of total employee involvement, ensuring a 98% product qualified rate—a testament to our rigorous inspection protocols at every stage, from incoming materials to final testing.
Our production capacity is impressive: we operate multiple automated lines capable of producing up to 10,000 harnesses per day, ranging from simple 2-wire assemblies to complex 1,000-wire configurations. We leverage advanced machinery, including fully automatic crimping machines, ultrasonic welders, and computerized test stations, to ensure consistency and precision. For instance, our high-voltage harnesses for electric vehicles are engineered to handle up to 300V and 300A, utilizing thick-wall XLPE insulation and high-conductivity tinned copper to minimize energy loss. We also offer various connector options, from waterproof connectors for underhood applications to space-saving ultra-thin ones for in-cabin electronics.
One of our key strengths is our ability to provide one-stop service, from initial design to rapid prototyping and mass production. Our engineers work closely with clients to understand their specific requirements, conducting feasibility analyses and creating DFM (Design for Manufacturing) reports to optimize cost and performance. We have extensive experience in new energy vehicle projects, having delivered complete harness systems for battery management, motor control, and charging interfaces for leading EV brands. For example, our collaboration with a major Chinese EV manufacturer resulted in a 15% reduction in assembly time and a 20% improvement in power efficiency through meticulous wire routing and gauge optimization.
We also excel in customizing harnesses for automotive aftermarket and specialty vehicles, such as golf carts, tractors, and agricultural equipment. These applications demand robust, weather-resistant harnesses that can endure harsh environments. Our recent project for a tractor ECU involved the development of a 500mm, 22AWG harness with 300V terminals, designed to resist vibration, moisture, and extreme temperatures. By incorporating waterproof seals and strain relief, we achieved a 30% longer lifespan compared to the client's previous supplier.
Beyond manufacturing, we emphasize sustainability and compliance with global regulations, such as RoHS and REACH. We use eco-friendly materials and implement waste reduction practices, ensuring that our custom made automotive wiring harnesses not only perform exceptionally but also minimize environmental impact. Our global supply chain ensures timely delivery, with an average lead time of 15-25 days for prototypes and 25-35 days for production runs.
In today's rapidly evolving automotive landscape, where electric vehicles and autonomous driving are becoming the norm, the demand for reliable custom wiring harnesses has never been higher. Our team stays ahead of technological trends, investing in R&D to develop harnesses for 800V platforms and high-frequency signal transmission. We invite you to experience our engineering excellence and gain a competitive edge in the market. With our proven track record, state-of-the-art facilities, and unwavering commitment to quality, we are your ideal partner for custom made automotive wiring harnesses.