Can replacing wires fix a display
No, on the newer MBPs, the display cable is basically integral to the &quot;Display Assembly&quot; part, even if it is just the cable that was damaged it is not replaceable on its own, not &quot;easily&quot; by any reasonable standard.
Realistically if the display cable is seriously damaged you need to replace the entire display half of the laptop.
If it is only the display connector that is damaged, it may be possible to repair but the smt soldering needed for such a job means it would not be easy either, though you might be able to find a third party repair shop that could do it for you without replacing half the laptop.
Though I don't think it is likely, if the problem is that the display cable connector simply came loose, then that would be an easy fix. But I feel that would just be wishful thinking.