Cab loom pinout ID

big10p

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I have a cab that's not JAMMA wired. It has a loom extension plugged into the edge connector to convert it to JAMMA.
IMG_20260417_121252908_HDR.jpg
Wiring:
Black = Ground
Pink = +5v
Orange = +12v
Orange/Purple = Speaker -
Blue = Video Blue
White = Video Sync
Green/Red = 2P Start

Anyone recognize the pinout? I thought it might be Unigame, but it doesn't seem to match. I can give some details about the wiring on the other side if needed, but thought someone might know just looking at this.

Cheers.
 
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