Where is the fuse for the backup lights?

Hello, The fuses will be listed in the owners manual, and that diagram will much better guide you to the fuse. If the fuse is good, it is likely an issue with the transmission position sensor which will activate the lights. You may also have burned out bulbs, so put the ignition in the on position and put the vehicle in reverse with the engine OFF if the fuse is good. Then you can check for power at the rear lights.