Winnebago LED tail lights

We have 12 winnebago aspect with the LED cats eye tail lights. I am having problem trying to figure out how to remove the lights and need to know if anyone has done it? Problem is about 30% of the leds are out. I am guessing solder issues but the lights do not have nut retainers in the back so I can inspect for breaks. Do the chrome covers come off revealing the nut plates or?

Have stabbed my fingers on the fiberglass trying to feel for the retainers with no luck.

TIA, currently in utah and will be in lava hot springs Id tomorrow.