I am not 100 percent up to speed on the 93 model variations but it's likely the same as the 89.
I am familar with the issues on the earlier models. Your battery should black top and black case for 93. White case was earlier years.
As for the positive battery cable, it's likely the same as the far back to 87. The original lead cable end is the giveaway as the new Motorcraft replacement is "C" shaped. I see used ones selling for $100 and often people snap up the new replacement part by mistake at a big price tag. I have found a nearly identical Motorcraft replacement like the original for a meer $18. Let me look up that part number.
As someone stated previously, the original battery and cable are only required for Thoroughbred and unrestored classes. If you need to dig deeper, I can ask Chuck to contact you.