2012 Passenger Brake/Reverse Light Inoperable

My 2012 Tundra (5.7L) passenger brake and reverse lights are inoperable. Replaced bulb with OEM (didn't work) and checked connectors but identified no corrosion/issues. Rear passenger turn signal light does work, and all driver side tail lights are operable. Any guidance would be greatly appreciated, thanks!

 

Disconnect the #8 tail light harness on the driver's side and connect it to the passenger side and see if everything works. That would at least tell you that the input signals are all working and it could just be the harness.

 

Thank you very much for the troubleshooting advice. I was able to locate the left/right rear tail harness disconnects; however, do you know what the release mechanism is for these connectors? I have not had success at disconnecting the connectors because I'm unable to identify a locking release mechanism for them. I'm assuming I should be depressing some aspect of the connector to release the locking mechanism, but it also appears there's a frame attachment pin that's also integrated with the harness.

 

It's most likely just a thumb tab that you press on one side of the connectors. Those harnesses are replaceable so it should be fairly easy. The attachment pin is probably just a push pin type so that the harness isn't flopping around.

 

Try this too....