Adapter C is used with the UZ-1 Universal Zebra Tool to troubleshoot these ECM motors: GE, Regal-Beloit, and GENTEQ X-13 Series Motors GE, Regal-Beloit, and GENTEQ Evergreen 'AH' (but NOT 'IM') Series ECM motors Other Manufacture "X-Motors" The Adapter simply plugs in to the end of the Universal Zebra's harness, and then to the motor. A Magnetic Overlay Card is included that explains what functions the UZ-1's switches and LEDs perform for this specific series of ECM motor. The Universal Zebra System features Free Online Training for each component. Crystal-Clear Clamshell Package with Hanging Hole Full-Color Insert with Instructions Package Weight: 2 oz. each Standard Carton: 12 Pieces UPC Barcoded - 7 68467 40113 5