Trunk pin
Reply #2 –
Not knowing the shape or color of these "other 2 things", or the part numbers in question, I'd have to say... a shotgun rack, and a tracking device planted by the CIA.
Not many places to put a pin. Can't drill any flat metal in the corners, because it's all outside the gasket. Maybe a custom bracket to hold it under the latch striker, or inside the loop of one of the curvy lid support hinged tube thingies, or a mercury switch stuck to the side of one of the thingies, or tap into the trunk light wire (has a mercury switch in it).