Left Turn Signals weak
 

I have a 1986 - 911 cabriolet. All of my associated left turn signal lights are dimmer than the right side. Includes Front & Rear indicators and even the turn indicator on the dash. They are all operating so I know they work. Have checked the actual light grounds. Is there something somewhere I am missing?
Can anyone provide advice?

Check the grounds. Try replacing the flasher.

Thanks! Since the right was fine didn't think about the flasher. Will recheck all the grounds

Clean the fuse mounts and install a new fuse as well as the grounds. The flasher is common to both sides so maybe not that, but stranger things have happened.