Garmin Reactor™ 40 Mechanical/Retrofit/Solenoid Corepack with GHC™ 20 (010-00705-49) is a below-deck autopilot system for sailboat and powerboat setups with mechanical, cable, linear, or solenoid drive systems. Powered by a 9-axis AHRS CCU, it delivers precise heading hold, wind hold, and tack/jibe functions while minimizing power draw and rudder activity. The corepack includes the ECU 12 and the 4-inch GHC™ 20 button display, fully integrating with Garmin chartplotters over NMEA 2000®. (Drive units and rudder feedback sensors sold separately).
In the Box
- Reactor 40 CCU (Course Computer Unit)
- GHC™ 20 helm control display
- ECU (Electronic Control Unit)
- ECU power cable
- Interconnect cable
- Buzzer
- NMEA 2000® drop cables (2 meters)
- NMEA 2000 T-connectors
- Male and female terminators
- Documentation


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