i wired a head unit up in my trans am and now my dash lights arent working, there was a little spark and now they wont work, there were two gray wires in the car one was a left speaker and the other was an illumination and they were both the same exact color wire so i took a guess and im thinking i hooked up the illumination wire to it because it sparked and now my dash lights arent working and neither does the head unit. did i just blow a fuse?