do they come on if you unlock the car? or is it when you open the door?
They're triggered by the courtesy light, but there's no reason why they couldn't be triggered by the interior light (which comes on when you press unlock on the fob).
well if they can be wired to the interior light than thats great - then when you unlock your car from a distance you get some extra light before you get to the car
i assume you just wire it into the power source for the interior light?
Yeah, either at the light itself or somewhere closer to the door. It may be possible to splice a wire behind the fuse box. That'd be something i'd find out before they're sold and would be in the instructions