It took me a while to figure out what all this meant, but I think I've got it. The cable that was on the bike was broken so I took it off and I will need to get a new one. I did save the tube that the cable went through (and another little piece which I think is the cable stop), I suppose I should have included that in the photo, and there is also a pulley already attached to the frame which is pretty apparent that it is for the shifter cable. So I think all I need is the indicator chain and the cable? Does that sound right?