Man Ace send me a picture of the button that gets pressed on your laptop. On my laptop there were very small spots to solder on by the switch itself. The way that I tested what pins needed the wire was by jumpering the wire across the very small button. You can get access to it it is just a pain in the rear, and scary as heck if you don't know what you are doing. Most laptop power buttons press against a small silver button that is attached to a circuit board. I would expect that it is possible to solder a wire on like what you were thinking, and then use a relay from your fog light wire, and it would work world class!