02 F150 Interior light does not come on.

I have a 02' F150 Supercrew and when I open my drivers front door the interior light does not come on. If I open any of the other 3 doors it works. I think it may be the door switch but not sure and don't wanna spend the money on one if I dont have to.

Very possible, the switch is inexpensive and easy to change. Just becareful removing the door panel.