The multi function switch was replaced. The headlights work fine. The emergency lights/flashers work fine (aside from the passenger side rear). The running lights work fine (at all 4 corners). The brake light/turn signal for the passenger side rear does not work. Sometimes when the right or left turn signal is on it will stop flashing and buzz. Any suggestions? Any wiring diagrams i can look at? Thanks.

Bulb is good, i even put a new one in for good measure lol.

 

If the bulb is good or replaced, I would check for good contact at the base. Clean up and put a dab of dielectric grease on the contacts to reduce corrosion.

Not too uncommon an issue, especially in moist areas.

 

Update. I took it apart, there was a wire that had pulled out. Fixed that. We have brake lights, and flashers work at all 4 corners now. Running lights work, now we have no turn signals. Dash arrows aren't even lighting up now.

 

With a wire pulled out, I bet it you might have blown a turn signal fuse.

 

Diagnosed it to a intermittent flasher. New one solved the problem!