Well i know im a n00b but i thought i would share my find with you.
I have read guides on here that say tap into the stork ect ect to turn them on, but ive found something easier.
behind the centre console you will feel the "cig" lighter and on the side of that is a little black box this is the bulb that illuminates the front of the "cig" lighter when your lights are turned on. Unplug the adaptor from the back of the little black box and it is just a single brown wire. This wire is a live activated by turning the switch on your stoke. So simple cut the adaptor off the end and attach your live to that. I can't tell you how much current draw this wire can handle but i am using ultra low current led Lights.
Not the best guide but i thought i would let you all know.
Gaz