Ceiling lights (3), porch light, and awning lights all stopped working at the same time. All are on the same switch panel. All other lights are working. No problems on the A/C side either. I have checked all fuses and have checked the switch for continuity with no obvious problems. I am a novice but do know a little about circuits, 12v & A/C systems. I have know idea what to do next. Any suggestions would be appreciated.