brian, i think the wiring is in place, but i'm not 100% certain on this one. the factory head unit's antenna switch-on lead is wired into the harness, so there's a wire that leads somewhere for certain. whether it terminates in the rear near the antenna or somewhere short of there i do not know. my gut instinct is that it's there. there is also 12V for the antenna motor that you can tap into from the hatch area light. so the only question really is whether the switch-on lead is present near the antenna.