My left rear brake light has gone out of my 03 cts. I am a novice when it comes to any repairs, but this should not be hard. I was wondering if anyone had any advice or other forums on this. Like what type of bulb I need (i have heard 1156 or 1157). I think I need 1156. If there any forums with pictures that would be nice. I think i just need to unscrew the black knows and pull back the carpet, but any advice would help