High Quality MB 38 Pin to 16 Pin OBD2 OBD Diagnostic Adapter For Mercedes 38 pin OBD 38pin Connector For Benz Free Shipping Description: Works on all Mercedes Benz vehicles with a 38 PIN diagnostic connector. Specifications: 1.Cable definition: Pin-out Diagram OBDII Connector(Female) ---- BE-NZ 38Pins Connector 4+5----------------------------------1(Signal Ground) 7------------------------------------------15(K Line) 16-----------------------------------------3(Power)