Hey guys, I just purchased a 06' TL with Navi to keep the miles down on my 04 Type-S. The guy I bought it from told me that he had some neighborhood kids install a "system" and they botched it. He said that they did something with the harness wires? Im assuming he meant wire harness? And that in turn disabled the Navi screen, bluetooth, navigation and the dvd unit in the trunk. I took interior apart to get to the back of the radio and navi unit but its all stock wiring, no signs of anyone touching it. Maybe someone can help me or point me in a direction to start looking to trace down what I need to do to fix this. Thanks!