Only my third brake light works and i can't figure out why. i replaced the sensor switch and that didn't fix it. and the fuse is still good so i have no idea where to even begin looking for the problem. please help i really don't feel like getting a ticket. oh before all this the lights would work randomly now they don't work at all. and the blinkers work everything else is normal so i don't know where to begin. thanks for the help