ITEM NAME:20 Pin OBD2 Diagnostic Scanner Adapter Cable for BMW E36 E46 E38 E39 E53 X5 Descriptio n BMW 20pin OBD1 to 16 pin OBD2 Connector This is a brand new data link cable, used specifically for connecting your OBD2 scanner and your vehicle with this 20 pin connector which is specifically for BMW's. Cable definition: Pin-out Diagram OBDII Female--------BMW(20Pin) 4,5------------------19(Ground) 7-----------------17,20(K Line) 15----------------15(L Line) 16-----------------14(Power Length: 40cm Package include: 1 x 20 Pin to OBD2 16 Pin Connector High quality buy, happy buyï ¼ EM01628A1.BMW 20pin OBD1 to 16 pin OBD2 Connector. OBDII Female--------BMW(20Pin). Cable definition 4,5------------------19(Ground). 15----------------15(L Line). 16-----------------14(Power. 7-----------------17,20(K Line). ).