[M_Bimmer]

Thanks.

I'll run it from the center console.

I just did a full retrofit in my F10 LCI using a pre-LCI M5 interior, which included running OEM wiring, so this shouldn't be too hard.
- Added full Merino leather dashboard
- Added 4-zone climate control (and wiring)
- Added 4-zone stratification flap assembly
- Added B-pillar vents
- Added rear seat floor electric heaters (and wiring)
- Added heated steering wheel (and wiring)
- Added full Merino leather door cards
- Added rear door sun screens
- Added rear window sun screen (and wiring)
- Added rear heated seats (and wiring)
- Added full Merino leather font comfort seats
- Added full Merino center console
- Added individual wood trim
- Added Gentleman's switch
- Added Automatic hi-beams (clock wheel change + coding)

....so adding ambient lighting to the back seat, B-pillar, rear lighter LED and ambient lighting to the front dashboard trim.