Hey guys so I'm at my last resort which is hitting you guys up. I'm not an electrical guy I'm finally at a loss. I have 06 cummins. Left tail light wont work. Thought it was the bulb. Changed them all since I was in there, no luck still no left brake light. But everything else works. Then I remembered the issues I had with the circuit board. So I went down bought some new ones put them in with the brand new bulbs and...still no left brake light. So being fed up with this crap of dodge tail lights I ordered a set of $250 LED tail lights, thinking the lights are just all messed up time for new upgrades...installed my new LED lights and still no left brake light but everything else works. I'm done. Idk what to do. I pulled every fuse under the hood and they are all good. Anyone help?!?

 

You might check the multi-function switch in the steering column. I think most of the lights run thru that as well.