wires were very easy to run, much easier than running the wires in the 08. there is a hole in the base and with the tower folded down the wires just slide threw the tube easily. drill a 1/2" hole for the speaker, then use a coat hanger bent as a pick to pluck the wire. what kind of tower speakers ?
You might want to ask your local stereo that has experience with towers how much they would charge to run. Earmark in Dallas charged me $150 to run the wires a couple years ago. I was going to attempt it myself but thought spending the $150 would be much easier than the headache of attempting to drill into the tower and fishing wires through it.