Minn Kota 2211415 Cable - Extension, PD/AP 110" Universal Sonar. Accessory Part#: MKR-US2-11 Minn Kota Extension cable allows for an additional 9 ft 2 in of length to your US2 adapter cables that connect your fishfinder with a US2 transducer on your trolling motor. Universal Sonar 2 delivers advanced water temperature sensing for the best view of the waters below. Waterproof construction.