Need some helps with next steps for fixing an issue.

Picked up TAF recently and have a issue. I noticed when I start a game the right Special and Shoot again are lite. After some testing I found the Column 8 lights are turning on Column 7 lights.

Col 8 = Col 7
* (81) = Lite Advance (71)
T (82)= Right Special (72)
h (83) = Shoot Again (73)
i (84)= Vault Green (74)
n (85) = Vault Red (75)
g (86)= Not Used (76)
* (87) = Thing Yellow (77)
Credit (88)= Thing Green (78)

Debugging:
In test mode: when testing col 7 individual lights are fine. When testing col 8 lights they will light col 7 lights.

Driver Board -
Disconnecting one of these connections 1 at a time did nothing.
Disconnect J133 no change col 8 still turns on col 7
Disconnect J134 no change col 8 still turns on col 7
Disconnect J138 no change col 8 still turns on col 7

Disconnect J137 change col 8 lights without turning on col 7

Finally, at some point i replaced the driver board with my T2 board. Pretty sure I still have this issue. Not 100% however.

Not sure what to do next. I am assuming my issue lies with col 7 but not sure what to do with that information.

Any help is appreciated.

Additional debug I have found if I disconnect the "Start / Credit button" lighting is normal. OK, so what is the issue I tried a couple of extra start buttons I had in the parts bucket and it didn't change anything. Would the original have had a diode that is now missing?

Solved the red-gray wire was run to connector J136 with the Yellow Grey. A quick look at T2 confirm it should be part of J133. Manual nailed it down J133-9.

Thanks!