Anilam 1100 and Mesa 7i97t

Hi!
I am trying to add the Mesa 7i97t card into my Anilam 1100 and I am so confused. I have (hopefully) wired the three servo drives and the rotary encoders correctly to the card, but I'm lost on what else needs to be connected. I'm specifically trying to figure out this group of 8 wires running from a PCB 801 board to a 90100289 REV A board. From my searching, I believe the 801 board needs to stay and the REV A board is the one I'm trying to take out, but I'm confused on where the wires go into the Mesa. I believe they go on TB5, but I'm lost on the order/what they do.
If anyone has advice or can point me toward a guide or something, it would be appreciated!!

I believe the drive enables are wired, it's the light blue wire hidden under the grey wires in the back.
I have no schematics, and am unsure where to look.
I'm trying to figure out the wiring off the original power distribution board, which is the last picture.