Animated tail lights - project opportunity

As part of my retrofitting Euro tail lights project, I ended up doing a bunch of reverse engineering.




One thing that I found was that the tail lights (at least the Euro ones I got) have a live LIN bus active, meaning there is something in the lights that is speaking digital communications to the car.



Unfortunately, those pins are not connected - see PIN #3 for all tail light connectors (4 of them).



Looking at the available settings for the rear BCM (BCM2) which controls the tail lights, there is a setting to enable animated tail lights, as well as test for them (under Drive Links in PIWIS). This leads me to believe that is the four LIN pins were connected to the correct LIN bus pin of the BCM2 (sorry, I don't know which pin), you could code/enable animated tail lights for a Taycan, which would probably look like this.



While personally I have no desire for animated tail lights like the above, I know there are people who like them. So CALLING ALL TINKERERS LOOKING FOR A PROJECT. Take what I found out so far and try to enable the animated tail lights. Things to do:

1. Find out which pin on BCM2 is the correct LIN bus to connect the lights to
2. Wire the four LIN bus connections to the above
3. Code the BCM2 to enable animated tail lights (if you get this far, reach out, I can go back to see where those settings were)

If you need pointers how to get to the light connectors and BCM2, see the retrofitting Euro tail lights project post.

Good luck!

EDIT: if anyone is interesting in pursuing this, let me know. I might have some more information such as which pins of the BCM2 appear to have a LIN bus on them. I would have to dig through some of my pictures and notes to pull that out. This would at least tell you which pins to try to connect to on the BCM2 (you already know the pins on the lights from above).

EDIT2: apparently this was present in the pre-release of the original Taycan, so much more likely that it feasible to enable it on all gen1's at least.

My 2025 is supposed to arrive sometime in August. I may not do this project immediately, but at some point I'd like to poke around to determine the differences in the Gen 2 from what @whitex discovered above. And, I can post back with my findings if things stayed pretty similar in these tail light wiring setups.

I have a spare set of EU tail lights and the rear light strip if anyone fancies taking this animation project on