OBDII Extension Cable Full 16 Pin Male to Female For Launch X431 iDiag/Easydiag 3.0/X431 M-Diag/X431 V/V+/5C PRO/ThinkDiag. OBDII Extension Cable Full 16 Pin Male to Female for Car. Obd2 16pin male to female cable compatiable for any car model with OBD interface, and most of the market The OBD2 diagnostic interface for gasoline and diesel.