No left rear directional or brake lights
I have a 2015 Prism 2150LE Class C motor home. We took it out last week and noticed the left REAR directional and brake lights did not work. The front left and right worked fine. We had running lights on the left rear but that is all. I assumed it was a fuse but couldn't find any that were blown. The manual is a joke on this rig so I took it to a Mercedes Benz dealer and they said it wasn't their problem and that the coach manufacturer needed to fix it. I have an appointment next week but would like to try to fix it myself. I've been reading other forums and some folks have had similar problems and said there were fuses located in other areas of the coach. I checked the fuse panel by the inverter and it all looks ok. It didn't have any fuses marked "turn/brake lights". I'm really stumped, could a wire have come loose behind the tail light? That was my next step. Any help would be greatly appreciated!