Check fuse 31 (acc/run crank) under the drivers side interior fuse panel. I was going crazy trying to troubleshoot this. Reverse lights and all the parking lights worked fine. Ended up swapping a camera even to no avail. Cleaned the plug till I could eat off of it. Sure enough I saw a random post about the accessory fuse on an YouTube video and decided to look and it was blown. Maybe the dashcam and phone charger was a bit too much for the 10amp fuse. I put the spare 15 amp in and it works like a charm
