thanks so much for the photos and instruction. i saw something like that in my car, only the top wasn't the same. it's a black piece of plastic that is round at the top and is octagonal or has edges on the side. so i wasn't quite sure how to get it off. i thought i had the right tool, but at the same time, i can't get any leverage around it. do you know what tool i would need to get? sorry that i don't have any pics.