Well I found a solution today...
Whilst I had the passenger side interior panels off the car to do something else I had a rummage around on the wiring loom and found a stray connector that didnt have a home....
Low and behold, it gives off 12V when the boot is opened... So it appears its just going to be as easy as fitting a bulb to the cable and hey presto...my very own boot light!!!
Saves me having to hack into the 12V power socket supply!!!
