Introduction of a wire harness processing company for prototype harnesses to mass production harnesses and an OEM manufacturing company for camper vans.
If you are looking to request a prototype harness, please consider "Prototype Harness Factory: Trial Electric," a wire harness processing company that has gradually become recognized as a brand. We accept harness processing across various fields, including automotive, medical, agricultural machinery, industrial machinery, aerospace, satellites, and consumer goods. Our ability to handle both low voltage and high voltage is also highly appreciated by our customers. We have a wide range of materials available, and we also support customers who only need material sales, so please feel free to contact us if you need assistance.
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basic information
We will respond to the prototype of one unit, and we will consider mass production based on the content.
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Applications/Examples of results
Over 6,000 prototype achievements from automotive manufacturers and suppliers. We also handle special harness processing such as evaluation harnesses and modified harnesses.
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Founded in 1982 and headquartered in Hekinan, Aichi Prefecture, Japan, Sanshu Wire Harness Co., Ltd. specializes in the manufacturing and processing of wire harnesses, operating two production facilities in Aichi and Nagano Prefectures. We support a wide range of industries, including automotive, electric vehicles (EVs), motorcycles, industrial equipment, medical and healthcare devices, agricultural and construction machinery, and aerospace. Our greatest strength lies in our flexible manufacturing capabilities, from a single prototype to full-scale mass production. Through our specialized prototyping brand, SHIDEN, we provide comprehensive support from the earliest stages of product development, even when detailed drawings are not yet available. Our services include component selection, weight and size optimization, rapid prototyping, and customized solutions tailored to each customer's technical challenges. Backed by decades of manufacturing expertise and an ISO 9001-based quality management system, we are committed to delivering high-quality products, short lead times, and competitive pricing. Guided by our corporate philosophy, "Three Connections," we strive to connect people, technologies, and the future, creating new value by solving our customers' challenges. We also place great importance on the growth and development of every employee. Through continuous innovation and improvement, we aim to be a company that inspires customers, partners, and employees alike to say: "We're glad we chose Sanshu Wire Harness."






