I bought this set two years ago, and only just got round to installing them. Shame on me.
Here's my write up.
https://ibb.co/album/juK5vaI connected the positive to the brown wire from my map reading light, and the negative just goes to any ground.
Here's some pics:
Just out of the box
Near side front installed
The drivers door sill
The off-side rear sill
The difference between this and the drivers is purely down to the exposure level of my camera phone. They are the same colour and superb.