BENZ CONNECTOR Product Detail DB9PIN-PEMALE TO MB38P MALE Specifications: Works on all Mercedes Benz vehicles with a 38 PIN diagnostic connector. Features Specifications  Cable definition: Pin-out Diagram  OBDII Connector(Female) ---- BENZ 38Pins Connector  4+5----------------------------------1(Signal Ground)  7------------------------------------15(K Line)  16-----------------------------------3(Power) Is This Connector Compatible With My Vehicle. Yes -----It works on all Mercedes Benz vehicles with a 38 PIN diagnostic connector.