Electronics Control Unit ECU Power Cable, Threaded Collar - 2.5mProvide power to your electronic control unit ECU with Garmins 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 made during GHP installation.Compatible DevicesGHP 12 Autopilot SystemGHP 20 Marine Autopilot System with SmartpumpWARNING This product can expose you to chemicals which are known to the State of California to cause cancer,