Okay, I did a few searches and never found the answer I was looking for. How the heck do these come off? I've worked on cars my whole life, but never seen pins like these. I tried to loosen what I think is a cap nut on the back, but it only turns a little bit and stops and I don't want to get big with it and strip it if it's not suppose to come apart this way. Is there something special i'm suppose to do or am I correct on backing off what looks like hex pin caps?