DC-10/MD-11 Control cabling.
Does the DC-10/MD-11 autopilot utilize the cabin floor routed control cables to operate the (tail) control surfaces? Or was it a different system, possibly above the cabin using electrical signals? I would usually look at the manual but I can't find any online in pdf format to fathom the answer to this question, which to fellow oldies/anoraks will know why I am asking.