I recently removed the fully working radio from my wifes car, when I put it back and plugged it in,it can be heard that it powers up when the largest of the leads is plugged in. The radio is dead also the hazard push switch does not light when turned on. I do realise that the radio has a radio code,but the digital display does not light up. Does anyone know if there is an internal fuse to the actual radio itself? or what it might be causeing this issue please