Turn Signal not Working

Hello, I know this is an old thread but I just fixed a similar issue. I hope this idea helps somebody in the future. This 10 year old thread really helped me!

After unplugging various leads, and turning on and off the lights and turn signals, with and without the ignition key on - to narrow down the area - it turned out all I had to do was loosen and re-tighten the mounting screws of the turn signal housing (valance panel) - same side as the “solid on” indicator light. To prevent this from happening again again, I use some dielectric grease in that screw area. Did both RH and LH sides. Hopefully that will create a non-corroding, watertight seal of metal to metal. So in this case it wasn’t a “grounding out” issue, it was a “lack of good ground” issue.