so finally was able to connect
i can confirm no adapter required for connection to the airbag module on the 159,
but the common problem with the interface needed to be addressed in my case. 120 Ohm bridging resistor between pins 6 and 14. where they should ether be completely separated, or both pins 6 and 14 can have a 100 Ohm and a 560pF capacitor going to ground.
it was well covered on the MES forums, however i thought i didnt have the problem since i could read the engine codes. turns out most likely you do have the problem, because engine reading doesn't use pins 6 and 14 (can bus + and - I/O)
hopefully this helps someone, as for my issue, still not resolved, will open another thread to seek assistance in getting that rectified..