So,
anyone who struggled with studying has heard this line at least once:
The lesson: “If you can’t do the first problem, skip it and start with what you can do.”
Yeah, well—anything annoying like that, I always put off for later.

Welding it to the fairing bracket is simple enough.
But then you have to remove the bodywork, take out the light, strip the paint, weld it, paint it… hmm?
So

Oh! Just clamp it—that’ll work! ★
T = 10 mm, 17. I hate using nuts, so even if it’s a bit thick, I’ll just go with stripped threads.
I’ve got various ball end mills on hand, so I’ll mill away bit by bit.

Success! Then it’s just anodize and we’re done.

I set the ETC and navigation to 050.
It looks quick, but I actually spent quite a bit of time thinking it through.
The end.