theres room behind the OEM weather strip to run an antennae wire. driver side has my antennae wire, passenger side has 2 small wires for dust lights on the back of the rack. you cant see the wire, and the weather strip sits in place just fine. if you pull the weather strip on the roof rail you can tuck them in that, then re silicon it down with a weight holding it and you dont see the wires at all until the roof rack hides them.
Thanks! That is what I do right now. I have a pair of S2's on each side and a pair of rear facing squadrons ont he rack, so those gaps are filled to capacity. Was just thinking about the KC wire hider if I ever wanted a light bar up there.