I'm kinda stumped because my turn signals work both sides and my brake lights work on the right side. I also still have good power to the trailer connector. I was always under the impressions brakes and turn signals were mostly tied together. I've done a little tracing and can't find anything weird. Can anyone point me in the right direction?

 

When my left break light stopped working I replaced the bulb,quick fix.

 

definitely not bulb turn signals worked which run off the same bulb as brakes as stated. Ended up being brake switch.