I've tried searching on Google but for the life of me, I can't find how the OEM sockets actually sit in the headlight housing. Do you have to glue them in? Judging by the pictures I see of the socket, they appear to twist and lock like the sidemarker bulb. But I can't find any actual pictures of anyone cutting out the holes and showing what the inside looks like. Are the little tabs already on the headlight inside the holes? You just can't see them until you cut the plastic out?

Thanks in advance .