Originally Posted by fuddyduddy121
Check the fuses under the dash - I believe it'* fuse 15 on your car.
The fact that your headlamp switch will not turn them on confuses me. Can you try that again? Rotate it until it clicks.
Do you have lights around your door lock key hole on the outside of the car? Are those functioning properly?
If it is not the fuse, you may have lost a ground connection somewhere.
This is a weird one. The lights can be turned on via their individual switches since they are getting power, and the individual switch is a second ground path that allows the local bulb to light up but not the common ground circuit that ties them all together. It'* why the common ground circuit isn't working that has me kind of stumped here. It goes to all four door pillar pin switches as well as the headlamp switch.
Hey, waitaminnit here: Your car will kill the interior lamps if they're left on for more than 10 minutes (e.g. if you leave a door open, etc.) So if one of the door switches shorted itself to ground, that would turn on the lights for 10 minutes, after which the circuit is turned off by the computer, and stays off until it detects that the door is closed again. Since it'* a shorted ground and not a door left open, it never resets itself.
Try disconnecting the battery temporarily, then reconnecting it, and see if the lights come on inside. If so, you have an interior light circuit shorting itself to ground somewhere.