Theres a mirco switch in the door lock.Spray so WD40 lube around the door lock.The switch is sticking causing the door ajar lamp to stay on and the interior lamps will stay on when this happens. The switches are prone to stick due to dirt.
What they all said is correct! Just totally spray a crap load of wd 40 in it. My dads F150 had the same problem
![Yup yup :yupyup:](https://board.marlincrawler.com/Smileys/marlin/yupyup.gif)