BMW E39 use inpa with OBD
https://www.linkedin.com/pulse/bmw-inpaediabas-20pin-16pin-obdii-connector-e46-1999-angela-huang https://ae01.alicdn.com/kf/HTB109BjJXXXXXccXFXXq6xXFXXXU/Lowest-Price-High-Quality-For-BMW-20-pin-to-OBD2-16-PIN-Female-Connector-E36-E39.jpg_640x640.jpg http://flagsupport.blogspot.tw/2015/04/ft232-ftdi.html