Wiring harness adapter guide for e30 M60 and OBD 1 M62 swap, pinout, and a cheap way of getting X20 and C101 connectors | RTS - Your Total BMW Enthusiast
BMW E36 Diagnostic Port Location
20 Pin to 16 Pin OBD2 Adapter Connector Scanner Cable for BMW E36 E38 E39 E46 Z3 | eBay
What plug is this for? : r/BMWE36
Round 20 Pin Port to 16 Pin OBD2 Adapter Cable for BMW - Performance Chip Tuning