I recently installed an aftermarket radio in my car and now neither my aftermarket radio nor my factory radio work. I checked the fuses and all the wiring connections and that doesn't seem to be the problem as I changed the fried fuses. My anti theft light is steadily blinking regardless if the car is on and driving or not. It's just weird because before my factory radio was working just fine. I'm stuck between thinking it's the wiring harness that sucks or there's something wrong with the anti theft system. Any input would be appreciated thanks.