What went on the inside of the front doors? It looks like a cable went there. You can see a rub mark also hangers for a cable. I don't see it in the factory repair manuals and my parts book is not here yet.
Judging by the four holes drilled around the window crank area, looks like someone mounted one of those aftermarket power window kits and perhaps routed the wires to it along the door using those hangers. (???)