i've got city 2k just to mention, so its become easy now as we only have to locate the switch, for that i recommend to press upon the lock mechanism on the lid with the screwdriver shaft where usually it the U shaped hook will press and get stuck to lock the trunk, if it gets light in the culter off, means ur lock has the switch as in mine city and that can be seen by removing the plastic cover from the lock ( or atleast thats the case in my model). if its not in the lid end then definately its in the bottom end and is just matter of locating it, but i doubt it will be in bottom part. so we got the swich means we got the wiring that can be traced back, and even if there isnt wiring given we can take +ve from switch and body will provide ground and we will have a working boot light.