Where can you buy a wiring harness to wire up 4 speakers and a 5 light bar on the tower and have a plug through the gelcoat like there is from factory for the Navigation Light on the tower? I would imagine I'll need to come down the passenger side for the sound and lights and would like it to match the other side. And would like to confirm size of Rad-a-cage on 07 outback (if i had to guess i'd say 1-5/?