Well... What do beer do you drink?? Cause we need a little joy that my "research" won't provide.
I was so certain I could map them, that I made cute little drawings, matrixes, took photos, made custom jacks, etc... And about an hour later, after disconnecting my box and taking it out to the shed, I got to tracing the pins.
But, sadly, all that stuff on the Live Drive does indeed go thru a circuit board before it goes to the ribbon cable. I coud not find electrical continuity on *any* signal wire.... only ground wires.
Not finding any on the first attempt, I did it four (count 'em), four times. Then on the second and third inputs, I did each one three times...
No joy
Sorry....
TwoRails