I haven’t done anything to my L320 today, not even opened a door. However, a few weeks ago I decided to rewire the backseat map lights and add some lights in the tailgate. Back in December 2021 when I bought the car I immediately wired up the backseat map lights to work with the doors (they don’t come on normally). It wasn’t my finest work and I wanted to redo it, but hadn’t yet. So I started acquiring parts, new diodes, factory style connectors, crimps, factory colored wire, lights, the works. Finally got it all together and took a day to get it done. From outside it just looks like it should. Behind the scenes it’s got a fresh new wiring job with a pigtail that can be removed to return it to stock. Diodes have been incorporated into the light housings with a third pin added for the door open circuit to turn them on. The new lights in the tailgate point down when the tailgate is open and light the cargo area very well, especially compared to how it came originally. Overall I’m really happy with the results.