right just had a look, it seems that there are 4 wires that go to a brown plug which is probably the same one as in the engine bay. There are also 3 wires that go to other looms so I think they are power/earths.
The ones that go to the brown plug:
B3 - Purple
B5 - Orange
C2 Dark white
B4 - White
B7 - Grey
So If I connect those up in the engine bay hopefully they will work.
The other 3 wires are yellow, white and black, so will any power wires be ok for these? Just thinking maybe one goes to a loom for when the lights come on??