Need help installing the lc2i pro into a 2013 lexus gs350 with the base sound system. I've never dealt with a line out converter before and not sure the best spot to tap in to everything is. Just need to know where I should be connecting everything on the lc2i pro at to the car. Do I want to power it off the factory amp or should I grab power from the fuse box? And what about the remote wire? Do I get that off the factory amp? And what speaker wires on the car do I want to tap in to? I've heard both the factory sub or the rears will work. Is one better than the other? Best grounding spot for the l2ci? Can I ground with the amp I added or find somewhere else?