Driver's door wiring problem

I have an Jeep that has the same problems as others. The interior lights wont shut off and the driver's side door controls wont work. After reading this website, I took apart the door boot and sure enough, there was 1 large black wire broke clean off and 3 smaller ones partially cut. Great information!
The question I have is instead of fixing these wires (I assume taking the door off to allow more access to this boot is best) is there a new wiring harness that connects inside the cabin of the vehicle (down by your feet) that I can simply pull out the old wires and plug the new one back in?