Yamaha - Siren Marine Wiring Cable 2 for Siren 3 Pro - SM-ACC3-WIRE - 6X8-8356N-00-00 Features: Achieve the ultimate Smart Boat System by increasing the number of sensors and accessories connected to your Siren 3 Pro Wiring Cable 2 is an additional wiring harness that allows you to add more sensors and accessories for enhanced monitoring, control, security, and peace of mind Compatible with the Siren 3 pro. M.P.N: SM-ACC3-WIRE 6X8-8356N-00-00 - Wiring Cable 2, S3P