Renault Master van Load Area Interior Light

Hi,

I'm planning on installing LED lights into the load area. On other vans, I have been able to remove the festoon bulb from the existing load area light and replace with an adapter to simply run the LEDs.
As the master does not have a festoon bulb I will have to wire into the existing wiring for the load area lighting.
There are 3 wires running to the load area lighting, I take it these are:
1) Negative
2) permanent live
3) timed live
Has anyone any idea which wire is which, I have searched for interior lighting wiring diagrams but haven't found the answer.
Any help would be much appreciated.

Thanks
mallon master

Renault Master van Load Area Interior Light