O.K. so it's out of the Haynes but having actually rolled up the sleeves and achieved it...may be a good time to start my first post here on a positive note.

Found that it's no good trying to get wire colours but the fact that they have the numbers printed on the wires near their connections.
Hope it helps somebody out

Constant Battery power B250 (light blue)
Accessory switch A01 (light blue)
Earth M841 (Green/Yellow)

Right Front Speaker + 8431 (orange)
- 8441 (pink)
Left Front Speaker + 8411 (orange)
- 8421 (pink)
Right Rear Speaker + 847 (orange)
- 848 (pink)
Left Rear Speaker + 845 (orange)
- 846 (pink)