I have a power window car. It was taken apart 30 years ago (long story). If i remember correctly the wiring split right and left from the dash area. The passenger side door was on one side and all other windows were on the other side. The drivers side wiring split to the drivers door, the drivers quarter window, and the passenger quarter window. I believe the wires for the passenger quarter window went through the trunk area under the speaker tray and then came back into the passenger compartment. It has been a very long time. I could be wrong. Lay out the wiring and see if it fits. I don't remember anything being under the carpet.