The reason I'm posting this is if anyone else needs this as when I was doing my conversion I couldn't find any wiring diagrams. This is for swapping an M50B25nv from an E34 into an E34 with A M20b20. The car fired right up and ran with no problems. If anyone has any question feel free to ask.
Screenshot - 21_02_2018 , 17_42_50.png
The green lines are all proven and the red line I wasn't sure about so they were not connected.