Something like this perhaps?
Draw the shape of the end of the cable first. I did it by polar arraying circles so that they overlapped, then trimmed out all but the outer bits to get that "scalloped" shape. Pedit it into a polyline, then sweep it along the a path where you want the cable to be, using a "twist angle". The longer the cable, the more twist you'll need to create the illusion. What you see here was 270° on a random length line approximately 7 inches long.