[MrForbes]

We had a 180ish turret in 2009, and just had a "mast" behind it that brought the wires up, and they then draped over to the top center of the moving part.

You could also try to use the plastic "chain" thing somehow, from the igus bag in the KOP.

I'm trying to convince our students that we don't really want the turret to move anymore than absolutely necessary to do the final aiming...something about having too many degrees of freedom...let alone the mechanical problems such as this that it creates