I have a 96 toyota corolla, and I recently installed a new stereo because the old one kept shutting off while I was driving. A couple of weeks later, I am having the same problem with this one. Whenever I start the car, the radio turns on but like 10 minutes into the drive it turns off, and then30 minutes later, it turns back on. However, after yesterday, even after I turn the car on, the radio does not turn on at all. It has not turned on at all. I do not know why it is not turning on. All the wiring is connected, though instead of using wingnuts, they are wrapped in electrical tape. Could this be the problem? What should I do? Thanks.