FWIW and in case anyone is interested in additional info, I installed Skene's Photon Blaster Turn Signals on my then-month-old C 400 GT -- which is also a CANbus bike -- last July. This is the product ...
... and my installation work in my gallery (pics, captions, and my video) of this farkle starts with this image:
I tapped into the stock rear wiring loom of the scooter without incident. While the wiring colors of my C 400 GT likely differ from an RT's, Skene lists corresponding colors at P3 Make Model Wiring Table, and general instructions at P3 Installation - IQ-260 series
Incidentally, I have also purchased Photon Boosters for the front of my bike ...
... and plan on installing them in a month or two, when things warm up in my neck of the woods.

Photon Blaster Turn Signals-FB
skenelights.com
... and my installation work in my gallery (pics, captions, and my video) of this farkle starts with this image:

2022 BMW C 400 GT
www.billanddot.com
I tapped into the stock rear wiring loom of the scooter without incident. While the wiring colors of my C 400 GT likely differ from an RT's, Skene lists corresponding colors at P3 Make Model Wiring Table, and general instructions at P3 Installation - IQ-260 series
Incidentally, I have also purchased Photon Boosters for the front of my bike ...

Photon Booster (LED modules only- pair)-LED
skenelights.com
... and plan on installing them in a month or two, when things warm up in my neck of the woods.