[MattBianco]

I thought GL class was separate, but the video link you sent clears it all about the direction at large. What a sad state of affairs.

I finally also understand the reason for the additional wiring.

My guess is DoT are just too scared to change rules, fearing backlash, and fearing liability as no one has done a $20mn study to show it would be an improvement over their 70 year old rules.

Would love to see a video of your taillights in action so I can stare enviously.

...that said, I have not given up. Sent an email to Nor Cal BMW Coding to see if they could do this.

Meanwhile, if you have a source for the lights themselves, would much appreciate posting it.