JD steering wiring harness with GS 2/3,Gen4/5 StarFire, Cobo and connection for ATU 300 New via 18-pin and pushbutton switch incl. and extension's connection 4-pin for Isobus socket as well as InCab. NMEA connection, implement switch for coverage control, seat switch connection, internal pin 1 wiring for driving speed transmission to the bus,