I agree with Jeff, What you do not want to do is step beyond the bounds of the typical home inspection in regards to lights not working. You should note them down, make them aware of it and even snap a picture of the light in question so on the report you can refer to it and say what ever you wish. But I believe it should be noted simply because you know the old saying.....and I am sure you all have heard it before...." it worked before the Home Inspector got here "....