Yep, I now have it working just how I want it.
So the switch works as follows: -
Off = All Off
Auto (Daylight) = Front DRL's only
Auto (Dark) = Dipped beam Xenon with a dimmed LED DRL's
Side Light = Front DRL's and Rear Lights
Indicator = Audi Style Dimming on the side of the active indicator
I will do a write up of the coding and install process at the weekend
