This product is either discontinued or we cannot get that from suppliers.
Brand: Garmin, Model: 010-11057-30, Type: Cable, Colour: Black, Compatible: Electronic Control Unit (GHP SmartPump) / GHP 12 Autopilot System / GHP 20 Marine Autopilot System with SmartPump / GHP SmartPump / Reactor 40 Hydraulic Autopilot / Reactor 40 Hydraulic Corepack with SmartPump / Reactor 40 Hydraulic Corepack with SmartPump v2 / Reactor 40 Mechanical/Retrofit/Solenoid Corepack.
Provide power to your electronic control unit (ECU) with Garmin's electronic control unit (ECU) power cable. Simply wire the electronic control unit (ECU) power cable to your boat battery as one of the last connections.