Interior Light

[Bludger]

Can anyone tell me where the wiring loom of the interior light runs? I want to wire in some additional lighting which will run off the main interior light (not the 2 reading lights in the front)

I need to trace the wiring from the light to the fuse box, so if anyone knows where this is, it'll save me ripping all the roof lining out and having to replace it with shag pile (now there's and idea)!

Thanks
Dave