i got a barn find arkanoid with no power supply in it trying to figure out the wires so i dont fry somthing. i can tell the white and one black goes to ac but the rest? yellow is +12? other 2 black any ground? orange? thanks!
whether it's bootleg or legit makes a huge difference. the legit boards use a flat molex plug for power. I can take pictures of the one at work permitting that's what you have, you can follow the wires back.
the original harness with it actually used the more typical red/black/yellow colors, so yours might be bootleg.
I had one of those too but I junked the bootleg hardware from the cab and put the proper Taito stuff in, just because the sound pitch was wrong on the boot.