These LEDs are unfortunately not built to the quality of the "Plasma" LEDs available for front marker and tail lights. The light output seems ok, but they don't fit well in the original sockets. I couldn't get them to maintain good contact, so I'm ordering a set of repro sockets/harnesses to see if they work better with these bulbs.
WCCC Response: Sorry to hear you're having issues with the bulbs Michael. It looks like you ordered in 2017, which means you got the older version of the bulbs. Those were indeed not the greatest. We've recently found better bulbs for this application, see the updated pictures. They are brighter and better constructed. If you continue to have problems with your current ones, we'd recommend upgrading to these.