I have a 2007 Legacy sedan, and I noticed last night that one of the two lights on the trunk lid above the license plate bracket is out. Looking at the owner's manual, it looks easy to replace on the wagon, but it doesn't even give instructions for the sedan. It simply says replacement may be difficult - take it to the dealer! Is it even worth trying to do myself, or should I just wait until the next time I take the car in for servicing?