I ran th wire through my tower and I always seem to screw things up the first time but not on this one.
First get some light string thread etc. Tie a cotton ball to one end. Shove the cotton ball in one hole at one end of the tower. Then Take a vaccum preferably a shop vac becasue of the power and place it at the other ond of the tower, or wherever the other hole is. Turn it on and here comes the cotton ball. Make sure that someone is there to help you by feeding the string into the hole while you a maning the vaccum.
After the string is through I taped the sting to a piece of stronger thin nylon rope and fed that through. Then I attached the wire that I pulled to the nylon rope. The reaon I did this is I did not want the friction from the rubber coated wire to casue the string to snap and then have to start all over again. Any question please let me know.