Hyundai turn signal fast blink! FIX problem

2013 Hyundai Elantra turn signal blinks fast and dim, sounds like a bad ground. forums all say bend tabs to tighten connections, but that doesn't always work. This is what works for me.
A person could also hot glue a small bit of fine sandpaper around the tip of a Qtip to reach inside without taking it apart. 🤯