I'm wanting to add the factory sub to my TJ that did not come with one originally. So I've bought a new(used) center console from a salvage yard out of NC and had it shipped to me hopefully I get it in tomorrow. But since my jeep didn't come with the factory sub I doubt there will be any wiring for it under my console. So how should I wire it up? I'm sure I'll need to cut off the pigtail that comes out of the factory sub box and run wires from there to my HU but I don't know what wires will be what on the factory sub. Has anyone else added the factory sub to there TJ that didn't have one?