With or without the door panels off. And how much wire are you installing.
From the inside, with the side cover off under the dash, take a coat hanger and make a small(less than 1/4") loop at the end. Important to have a complete loop so it doesn't snag stuff. Fish the hanger through the rubber tube. Use your fingers to feel it and bend it as it goes through. You want to keep it away from the other wires. Once you are in the door you can put your new wires in the loop and pull them back through.
Word of caution. The door window wires have a habit of getting a break right inside the tube. I find it sometimes needs to have the tube pushed off the body from the inside and from the door so you can see the wires if they are broken. That will require the door panel completely off to do it right.
[This message has been edited by cmechmann (edited 05-06-2014).]