I'm trying to figure out how to install a new headlamp adjuster. It's the fixed adjuster for the headlamp. The one that fits into the big hole. How do you install it? I can see it has 3 prongs but I push it in and there is nothing to hold it. It wont twist like a bayonet. I don't want to risk breaking it as they cost $10 each. It looks like three tiny plastic tabs have to somehow fit through the hole and hold it in but I have no idea how to get them through the hole. Is there some secret to this? Thanks.

David (1987 Wolfsburg)