Well i swapped the head unit everything fine and I have no sound at all. I have a 00 with the Bose audio system. I'm assuming it's because I don't have the smaller harness connected. I tried with the old one without as well and no sound either. Is there a proper way of getting this to work without having to buy a harness? Or do I have to wait till after the holidays to do it right? I want the amp to still work correctly with the new unit. Any ideas?