A3 8PSymphony wiring help needed please

[Jimboginge]

Hi all, bit of trouble in the car, removed the HU to fit switched live, found a mass or **** poor wiring back there.

A previous owner has cut the multiplugs off the loom and bodged the wiring.
What I need to find out, is the layout of the wiring, I haven't got either the standard HU or the multiplug so need to identify which colour wire is for which purpose. I've sorted the power, so just need the outputs explained.
The wires I have are:

Orange
Orange w/ purple trace
White
Brown

Then on a separate bundle:

Yellow
Green
Grey
Brown
Black
White

Pic attached for reference, this is how I found it.

Thanks