Very interesting, if you can find that picture, I'd love to see it.

I am trying to find the crystal-clear photo I took of a ~2020 Model 3 with this phenomenon. I was standing next to him at a light and managed to capture both the good and bad headlight side by side. While he was driving (one lane road, two or so cars ahead), you could see the bluish-purple UV-colored cast on the surrounding roadways and tree trunks. Unfortunately, my phone is not "tagging" these photos on the map (particular location), and nor are they showing up in my gallery's "Enhanced AI Search". I also do not remember the approximate time of year I took them... all I know is "2025, particular roadway that I take every Tues and Thurs evening to piano." 

Reason why I made this thread was because I noticed a similar, albeit less severe case of this on a 2023 Toyota Corolla yesterday. Driver's side was normal, while passenger's side was blue-shifted.

May be a tradition. Triac may be more robust. Surprisingly, a pile of off-the-shelf parts still can be significantly cheaper than one specialized one. I can speculate that ignition SIDACs probably were firstly developed by an American manufacturer, so these were initially better available in US.

Not related to this thread, but what sort of LED fixture are you using as the replacement?

Leotek Comfortview lights, black finish and most likely to be fitted with 80-degree cutoff shields. Big time night sky viewing there and small coastal town.

@NeXe Lights, most are 70w with I believe an additional 100w.

A bit late but here's the pizza I had from Marcos a few days ago.

I'd guess the bottom is the heaviest with the gear and all . The globe could be made of plastic .

I just find it weird to see the fixture sitting upright in the van.

 OK , I remembered someone did ! I had no idea it was you . 

Good to know. I did not realize I shared it all those years back.

 This video was posted on LG years ago .