dome light problems

[jdsnc82]

So when I open my door my dome light wont come on. The lights on the door come on but not the one on the roof. I hit the the inside light button and it comes on but nothing when I open the door. I even replace the sunroof/dome light assembly. Can someone help or tell me where the button is that tells you when the door is shut or open. Any help would be helpful. Thanks