None of the rear lights are working

Good morning,

I attached a diagram for you of the circuit.

You need to check the fuses for voltage to be sure power is available to the multifunction switch for turning on the lights.

https://www.2carpros.com/articles/how-a-car-fuse-works

Use a test light to check for voltage.

https://www.2carpros.com/articles/how-to-use-a-test-light-circuit-tester

Roy