I tried searching but seems like everything came up for the earlier LC100s. I'm going to install a new head unit soon and would like to bypass the factory amp when I do it. I might just splice everything at the amp but would rather not cut up a bunch of wires. I've found several Metra harnesses for Toyota that claim to be amp bypass harnesses but have no idea which one I'd need. Has anyone bypassed the amp on an 03 using a Metra harness?