GODIAG Full Protocol OBD2 Jumper for E-CU Progarmming. Full protocol OBD2 jumper is used to connect E/CU for E/CU progarmming via OBD2 way. Support standard obd2 full protocol connection [double K line, double CAN line], 3 large and 2 small power plugs, 4 large GND, 4 small GND.