Electronics Control Unit (ECU) Power Cable, Threaded Collar - 2.5mProvide 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 made during GHP(TM) installation.Compatible Devices:GHP(TM) 12 Autopilot SystemGHP(TM) 20 Marine Autopilot System with SmartpumpWARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.