What's involved is mostly time and patients and a spare pair of hands. You can use a multi bit/step down bit to make your holes. You'll need a fish tape to run up/down the tubes. I'd pull a string in first as well, then the wires. The other trick that can work is to use a really light string like dental floss and a vacuum. We do this for blowing conduits that are too long for a fish tape...obviously not with dental floss. You at the opposite end you need a piece of coat hanger or such with a hook on it to try and pull the string through. Rubber grommets at the holes will help the wire not to chafe. Depending if you need to fold your tower you will need disconnects to go through the hull.
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