Please, Bizmo, feel free to post everything you think is convenient in my/this thread ... all of this is very interesting!
Well, I have read in erWin the two removing / installation procedures for the LED modules, 8IT / 8IX vs 8IU (the same images that you show us), and as you mentioned, the biggest challenge is in the internal wiring. In no case will it be an easy task to convert an 8IX headlamp to an 8IU headlamp. Maybe it's not even possible because of the lens ...?
For those of you who are reading all this, I have found a video on youtube for the 2015 Passat LED headlights, which, although not exactly what is explained in erWin / Elsa for the Golf, can be useful to know what we are talking about:
- It is in German, but I don't think there are problems of understanding for those who are used to modifying/investigating in BCM adaptation channels, etc ...
https://www.youtube.com/watch?v=ktduT9gWJRQ