From my notes:
It is pretty easy to run wires from door to body as the rubber tube, grommets and retainers come apart for servicing. Takes less than 15 minutes.
Push rubber boot lip at door, between frame and door, into car door. It is easy to pull back out. Note the UP on the rubber boot when pushed to normal. Pull other end of rubber boot away from body frame plastic grommet. You can move boot into door, but do NOT let entire boot fall into door.
With flat screwdriver, Push up on tab located in the bottom/middle of plastic grommet going into body. Grommet can then be tilted up and out, away from body. To gain additional working room, slightly close door while working grommet and wires out of body. Push other plastic tab to separate outer grommet retainer section from inner grommet section.
Now you can move outer grommet retainer plastic section to better drill a small hole into it. You will easily see how once you view the parts. Drill hole into one of the small corners, so that a wire can pass through, from outside to inside. This is not any sort of electrical connection, so no fears.
With boot and grommet still pulled away from frame, run wire into body opening, twisting it upward to make it easier to see under removed internal kick panel. Grab wire inside car and pull some through. Go back to grommet. Clip grommet back together with main section. Run the other end of wire into drilled hole, heading toward door. Pull wire through boot into door.
You now have wire from inside of door to inside passenger compartment.
Attach boot to plastic body grommet like you put fitted sheets on a bed. This was the hardest part of the whole job with large hands. Had the wife do it, which took her about 5 minutes. After boot is correctly attached, clip boot/grommet back onto body. Pull boot out of door, then attach boot lip to door, noting the UP imprint on boot. Done.