I am working on my mom's 2011 escalade. the driver's side hid light has stopped working. we ordered a new bulb from amazon and replaced it, but it still doesn't work. has anyone else had this problem? there are a few drops of water inside the assembly, which may be the cause. I don't know what to try next. should I order a new ballast? I did check the fuse, which is good. what should I do next?