I'm changing all my bulbs to LED and found these. I was going to add led rings to tail lamps but thought this might be cool! I know they will need a load resistor added to wiring harness but much easier than trying to open the tail lamp assembly to install the rings.
These fold closed to insert into the opening and spring open once installed.
Thinking about just the two outer lights since the center light has two diffusers that would hide the effect.
They work for brake and parking.