Cable wise, the size is coated (vinyl) 1/16″ with a lead nipple similar in size to that found on a bicycle. Mine failed at the joint (see image) do to corrosion likely caused by dis-similar metals interaction. I’m guessing almost all failures will happen like this.
I also took some close up images of the cable and the nipple for sizing needs. I’m going to use marine grade coated wire for my new cable and likely make my own nipples. Stay tuned for those details.