I have a 2001 F350 Lariat V10. When I get in and close the door the door ajar light on dash is on and interio lights stay on till I drive a bit then I'll hear a click in dash lights go off but the door ajar light stays on. When I park shut off truck and open door interior lights come on as they should, but when I close and lock doors the lights stay on and will drain by battery. Right now if I have to use my truck I disconnect negative terminal on battery. Before I go to Stealership anyone know what this would be? Relay maybe I'm hoping? Thanks in advance for any replys. Jim