Glad you found the problem. I just changed my trunk light last night and it arched the same way(had a led light in there that was still partially illuminated and flickering even when off, so put a normal bulb back in for now). Still functions normally but would like to check the fuse anyway.So, pulled the fuse and the trunk light went off. Replaced the fuse and the trunk light came on. Like the tree said to the lumberjack, am a little stumped. However, that's neither here nor there at this point and great the body control module wasn't replaced.