AFlanders

I have an 03 gt mustang and about 2 years ago the door lock stopped working. It would work on and off once in a while then finally stopped working via remote and the electric button inside. So i ordered a motor a few days ago for it and am still waiting. But now the window on that side randomly decides when it wants to work. It use to rarely do it, but in the past week its gotten worse not wanting to go down until it wants to.. Could the whole problem behind the door be the wiring, and none of the motors? Any ideas or suggestions? It hasnt rained in a week or 2 here and i havent left the windows open at night, so i dont think it would be from moisture.

Hopefully i put it in the right section this time.