So, it's the 3rd option, the wiring that's in the car now is expecting the first option, you press it once and returns to normal position, keeping the lights on, so a momentary switch, the body control module works out if they are already on or not and switches it over.
but the stalk that it is being adapted to is a toggle, so the second option, you press the switch and stays in it's location keeping the lights on until you press the switch back(you just don't need to hold it)
so I need to replicate the first, where you press and release and the lights stay on, until you press it again, I know that there would be no way to know the position of the stalk and that at times the switch may be flipped, but I'm not concerned about that bit