Joey, I tried taking pics of the wiring connectors for the sample TZ opto boards. The pics were out of focus so here is the pin out.
Two opto boards on the bottom of playfield.
Right opto board:
J1-1 grey/purple dash
-2 grey/blue dash
-3 grey/green stripe
-4key
-5 grey/yellow stripe
-6 grey/orange stripe
-7 grey/red stripe
-8 grey/brown dash
-9 black/ no color
-10 black/ no color
J2-1 orange/purple stripe
-2 orange/blue dash
-3 orange/green dash
-4 orange/yellow stripe
-5 orange/black stripe
-6 orange/red dash
-7 orange/brown dash
-8 key
-9 grey/ no color
-10 grey/no color
J3-1 green/grey dash
-2 white/purple stripe
-3 white/blue stripe
-4 white/green stripe
-5 white/yellow stripe
-6 white/orange stripe
-7 white/red stripe
-8 white/brown stripe
-9 key
-10 black/no color
-11 grey/yellow stripe
-12 empty
Left opto board
J1-1 empty
-2 grey/blue dash
-3 grey/green stripe
-4 key
-5 grey/yellow stripe
-6 grey/orange stripe
-7 grey/red dash
-8 grey/brown stripe
-9 black/ no color
-10 black/ no color
J2-1 empty
-2 orange/blue stripe
-3 orange/green dash
-4 orange/yellow stripe
-5 orange/black stripe
-6 orange/brown dash
-7 orange/red stripe
-8 key
-9 grey/ no color
-10 grey/no color
J3-1 empty
-2 grey/yellow stripe
-3 black/no color
-4 key
-5 white/brown stripe
-6 white/red stripe
-7 white/orange stripe
-8 white/yellow stripe
-9 white/green stripe
-10 white/blue stripe
-11 white/purple stripe
-12 green/purple dash
Hope this helps,
Dave