I’m sorry I didn’t do this sooner. I was so focused on the circuit that I never really paid attention that almost every Guitar Hero board I’ve come across has a part number either in the copper or silk-screened on it. I made a part number cross reference that actually makes more sense than any other method. To quote Homer Simpson “D’oh”.
Remember, if your board’s not on this list, let me know – it might be one we want to add! (read My fret board isn’t on your list.)