Well, I am relieved and embarrassed....
This friggin weird power block (to the right of the oxygen sensor heater relay arrow) is used on the E34 to power up the DME/Main/Fuel relays... lol
I didnt have a wire for it so I assumed it did not need anything or exist... needless to say I ran 12v to it... and boom car fires up haha.
Thanks for all the responses regardless of my stupidity!