greg [HI]
hik9sar@aloha.net
though I've thought about it (since seeing the Jeep Liberty) I haven't really looked at ways of doing this. One thought would be to try and see whether running it under the roof rack gutter would allow you some interior access. If not another option would be the rubber door seal towards the top joint (though it would be visible) or the dreaded "hole" in the roof with future leaks a probability. Since I'm running four off road lights mounted on the brush guard I haven't gone beyond the thought for now.
Let us know what you decide.
greg