So, I installed one of these in my neighbors daughters 2010 Camry. It is utilizing the factory HU so no remote wire is available. However, this amp has a signal sensing switch that senses the speaker level input. Got it all hooked up and it works great. UNTIL....... you shut it off. The amp does not power down and throws a huge bass feedback through the sub. And when I say shut off, I mean stereo, car, everything. It will shut off if I switch the auto sensing switch off. But then the amp wont turn on. So, I'm wondering if any of you have experience with this and can point me in the right direction. I can wire a remote, toggle switch, or relay to turn it on. But Id rather not to keep it simple for her and myself. After all... this is a teenage girl. I am hoping that someone has input to anything I may have overlooked.