The Tohatsu 20 foot Main Harness Extension 3SS761140M is a genuine 20-foot wiring harness engineered specifically for remote control installations on MFS 9.8hp through MFS 140hp four-stroke outboards. This versatile rigging component establishes the electrical connection between your engine and control system, enabling seamless throttle control, gear shifting, and comprehensive engine monitoring across medium to large vessel configurations.

Built to Tohatsu’s marine-grade specifications, this harness withstands the harsh saltwater environment while maintaining signal integrity across its 20-foot length. This popular mid-range length offers the flexibility needed for most large center console boats, dual console vessels, and walk-around cabin cruisers where the helm sits at a substantial distance from the transom. The length provides enough reach for clean cable routing without excessive slack that can create installation challenges.

Compatible with Tohatsu’s comprehensive four-stroke lineup including the MFS9.9, MFS15, MFS20, MFS25, MFS30, MFS40, MFS50, MFS60, MFS75, MFS90, MFS115, and MFS140 models, this harness integrates seamlessly with Tohatsu control boxes, key switch panels, and instrumentation. The design embodies Tohatsu’s reputation for straightforward, reliable marine engineering with sealed connectors that resist corrosion and deliver consistent electrical performance.

This genuine harness supports all essential electrical functions including tachometer signals, trim gauge operation, TOCS engine diagnostics, and emergency safety circuits. Northeast Marine stocks the complete range of Tohatsu rigging components, ensuring you have the correct harness length for professional installations on any vessel size.