TLDR: Removing all panels on the trunk lid was a better solution than just removing one.
I swapped out my reverse light bulbs and license plate bulbs with LEDs. The plate light was super easy. Not much slack on the cable though, and the bulb is pretty snug, so I had to use leather gloves to pry them out. Rubber gloves would also help if you have them. Made sure to check polarity was correct before closing it all back up.
The reverse lights were a whole other beast. Seeing the photos and watching the YouTube video made it look easy to disassemble the trunk panel (which it was), but the bulb socket was a PITA to get to this way and screwing the socket back into place without taking the panel completely off. For a moment I thought I dislodged some adapter cause I could not get the socket to latch for the life of me.
The other major problem I encountered was that the panel would not align back up properly at the glass and where the bottom panel meets the side panels, and the pins near the center would not align properly either. There was a little plastic piece in the corners (holding the wiring for the rear defroster?) protruding out between the glass and panel, which clearly was not supposed to be showing.
I followed the advice of the other members here who said the top and side panels on the trunk can also be easily removed. Once I did that, the large panel was able to align perfectly and I was able to close everything back up in factory condition.
You can start pulling the middle of the top panel, under the third brake light between the glass. There are 6 screws in total including the handle. Two on the bottom of the side panels that hold the large bottom one up, and two on the top of the side panels that hold those up. Everything is held in place by the plastic pins otherwise. It’s also worth noting to pull down on the latch part of the panel because forcing out the corner of the panel will likely warp/bend the plastic by the handle area.
When closing up the large bottom panel. I started by pushing in the middle to make sure the central pins clipped into place then worked my way around the outer portion to hear the other pins click into place, while watching the edges line up flush with the trunk lid.
It may be possible just to pop out the bottom of the side panels to remove the screws for the large bottom panel, but I found it was easy to pull from the top.
I’ve included photos of the panels, pin locations, and screw locations. And what it looks like underneath them. Hope it helps the next DIY member who wants to give it a go.
Reverse light bulbs I used
AUXITO 912 921 LED Backup Light...
https://www.amazon.com/dp/B0728DYR9H?ref=ppx_pop_mob_ap_share
Plate light bulbs I used
194 LED Bulb 3030 Chipset T10 194...
https://www.amazon.com/dp/B07GRVN7R6?ref=ppx_pop_mob_ap_share
I’m quite happy with the results. Looks to be 6000k color to me. Just hope they won’t require changing any time soon.