2001 century back up lights

My back up lights don't work. I've had the bulbs changed. The parking and brake lights all work. I haven't a clue? Can someone give me a suggestion? Is there a fuse or circut somewhere that controls the backups? Thanks.

I had an issue with my reverse lights not working, and I replaced the fuse in the fuse block and changed the bulbs and no lights. Then I stumbled across another fuse block under the hood next to the battery. There was a blown fuse in there, and when I replaced it my lights started working again. Check there, and I hope I was helpful today. Take care and have a good day.