The parking, dash, license plate and fog lights stopped working?

Okay, you checked the fuses with a test light or meter? With no power to those and the relay that does work we will try a couple things. First the ground from the light switch, for that the easiest test is to pull the relay and connect a test light to a known ground. Now touch the contacts where the relay was. You should find 2 that are hot. Now remove fuses 1 and 2
and use one of the power feeds you found earlier with a fused jumper and touch both of the contacts for fuse 1. If the circuits are complete, you should see the dash lights on one side and the parking lights on the other. Those cut the relay out of the circuit. If they work swap the relay with a different one, if you still have no lights then it's likely internal to the smart junction box (body control module). To replace that you need a scan tool and programming access, you need to download the configuration from the current box. Then you can remove and replace it with the new box and then upload the information back into it. That will get you the lights and fog lights as they are an option that gets turned on through the box as well as setting it to control the rest of the electrical items as well.