Garmin Electronics Control Unit for GHP 12 AP New Condition. Features of Garmin Electronics Control Unit for GHP 12 AP: Electronics Control Unit (ECU) for GHP 12 sailboat autopilot MFG# 010-11053-30 Performs signal processing and supplies power to drive unit. Included Accessories: Electronics Control Unit (ECU) for GHP 12 sailboat autopilot Documentation Package Contents: Garmin Electronics Control Unit for GHP 12 AP Garmin 010-11053-30: Electronics Control Unit for GHP 12 AP New Condition