I can't say for 100%, but... I'd find it hard to believe that wires are running in that spot since it doesn't appear there would be an accessory directly below it where it would make sense for wires to come up that way to the hardtop. BUT, if you can gain access (visually see... or a cheap snake camera) -- either through an e-box or by removing an item from the hardtop -- to the backside of the tube where it attaches to the hardtop you should see if wires come out from there.
Some of the items on the hardtop are probably due for re-sealing, anyways, right?