Headlights won't shut off
 

Headlights work. The automatic shutoff does not always work. Checked all doors, no problems there. The problem is not the relay, I checked for power to the relay, and it is still receiving power to stay on. I have to manually turn them off. I'm not sure what controls the relay or where to look next. I'm sure I could fix it if I had the wiring schematic or help from you fine folks!