The wiring harness business of the Group is done by Motherson Sumi Systems Ltd., the flagship company of SMG. MSSL was established as a joint venture partnership with Sumitomo Wiring Systems, Japan for wiring harnesses manufacturing. Today, it manufactures Wiring Harnesses, High tension cords, battery cables and high level assemblies.
The Group provides complete solutions including design from basic vehicle schematic, development, prototyping, validation and manufacturing of wiring harnesses for passenger cars, commercial vehicles, two & three wheelers, multi utility vehicles, farm & material handling equipment and off-road vehicles. MSSL also manufactures specialized wiring harnesses for white goods, office automation equipment, medical diagnostic equipment and other electrical and electronic equipment.
The complete vertical integration for manufacturing critical wiring harness components like wires, connectors, terminals, grommets, junction boxes, relay boxes, protectors etc., enables MSSL to provide quality products with reduced time to market. The capability of designing and manufacturing of jigs, fixtures, applicators, circuit checking & assembly boards, supported by state of the art facilities for wiring harness & component testing, makes the company a full system solutions provider.

The wiring harness business of the Group is done by Motherson Sumi Systems Ltd., the flagship company of SMG. MSSL was established as a joint venture partnership with Sumitomo Wiring Systems, Japan for wiring harnesses manufacturing. Today, it manufactures Wiring Harnesses, High tension cords, battery cables and high level assemblies.
The Group provides complete solutions including design from basic vehicle schematic, development, prototyping, validation and manufacturing of wiring harnesses for passenger cars, commercial vehicles, two & three wheelers, multi utility vehicles, farm & material handling equipment and off-road vehicles. MSSL also manufactures specialized wiring harnesses for white goods, office automation equipment, medical diagnostic equipment and other electrical and electronic equipment.
The complete vertical integration for manufacturing critical wiring harness components like wires, connectors, terminals, grommets, junction boxes, relay boxes, protectors etc., enables MSSL to provide quality products with reduced time to market. The capability of designing and manufacturing of jigs, fixtures, applicators, circuit checking & assembly boards, supported by state of the art facilities for wiring harness & component testing, makes the company a full system solutions provider.