Hi, Brett
If you could make it just a little bigger the whole wild world could see it.
If you'd clean it up a little it'll probably work one more time, (electrical contact cleaner).
Chip
Edit: Color code is probably, Blk Gnd, Red Pos, White A, Blu B, Grn Sig Gnd maybe Index is there a index ring on the disk ?
I'll give you a call tomorrow.