Just ordered a replacement window switch to fix a problem and apparently this had nothing to do with my window not working. I tried switching all the relays that are located under the bottom left kick-panel on the driver's side but still no function. With each switch, I tested my passenger window and it worked every time when I used the passenger's side switch. However, the driver’s side control would operates the passenger-side window, failing only when I tried to move the driver-side door down. It also never made the driver’s side window move or even make a noise. I did find this little, foam-rapped plug that only looks to have 13 and a U on it and the wires leading to it come straight from the window control unit of the driver’s side. Could there actually be relays’ on the passenger’s side that control the window operations? I have no clue what to do next. Here is a picture of the unplugged mystery piece.