03 electrical issues
I have an 03 F-250 6.0 Lariat FX4, 185k on the odometer. The interior lights do not come on when the rear doors are opened. Also recently, the interior lights are staying on intermittently after parking the truck and locking the doors. I know this truck has a timer that turns things off after a set amount of time if a door is left open but do you think this is a switch problem or a timer issue? Also, the battery light is coming on at idle, once off idle slightly the light goes out. I recently changed the belt and tensioner. Alternator??
Any help would be GREATLY appreciated


