GHP Compact Reactor Hydraulic Autopilot, With GHC 20 and Shadow Drive | Garmin
Garmin GHC™ 20 Marine Autopilot Control Unit
Buyr.com | Autopilots | Garmin Ghc 20 Marine Autopilot Control Display Unit
Initial look: Powering up the Garmin GHC 50 vs GHC 20 - YouTube
Buyr.com | Autopilots | Garmin Ghc 20 Marine Autopilot Control Display Unit
Amazon.com: Puccy Case Cover, Compatible with Garmin GHC 20 Marine Autopilot Control Unit Black Waterproof Pouch Dry Bag (Not Screen Protector Film) : Electronics