Picked up electronics from '97 Gibson Tobias Classic 5. It's all Bart XTCT-LZ per Bart site, !!EXCEPT!! Gibsons little black box mid unit that has an orange, purple, and black wire. Bart mids only have 2 wires. I know the orange runs to the bart preamp, and assume that either the purple or black wire run to the mid control, but where the other wire runs, I don't know. Anybody have a clue? Emailing Gibson has produced zip!