Docedison:
The wire (ribbon cable) in the picture is 30 Ga wire and the current is being sources/sunk through several feet of what is essentially data grade wire
Are you referring to my picture? I had 1K resistors, so if my calculations are correct the most that each wire would have to take is 3 mA, and 3 * 8 = 24 mA for the Gnd return.