[lkortbeek]

I am trying to wire in an MSD 6T (p/n 6446) into the TBI in my '76. I am apparently missing something huge because I cannot figure the wiring out. My setup involves:
'78 distributor (modified to pull out advance - per Downey instructions and TBI thread)
Standard barrel type coil without amplifier
MSD 6T
I have tried emailing MSD but haven't got an answer.
I am using the GM TBI from an Astro van. I have attached the GM wiring diagram that matches what I have.
I am also attaching the MSD instructions.
Can someone tune me in to what goes where? I know the heavy red and heavy black go to the battery. The black should go to the - side of the coil and orange to the + side of the coil. The red and white should connect to the P/u in the distributor. How do I tie in the white, purple, tan, and black to have it talk to the computer?