on the headlights/parking lights? I've had this problem before, but it was just a fuse which I replaced and then problem solved. This time, I turn on the headlights/parking lights, and the interior goes dark. The overhead light still works, but the radio, heater/ac, and gauges are all dark. No fuses are out and they are all good, and no wires have been touched. All the other lights (exterior and interior overhead) work minus the ones that need replacing. Taillights usually would go out too since they run on the same relay/fuse but they still work perfect.
