ITEM NAME:12 Pin OBD1 To 16Pin For GM OBD2 Adaptor Cable For Diagnostic Scanner New Best.Adapter Type: 12 Pin To OBD1 OBD2 16 Pin. 1 Diagnostic Cable. Output connector: OBDI OBDII 16 Pin Female Connector. Input connector: 12 Pin Male Connector. We want to make sure you are happy with our item.