I need to replace my battery in '95 GT, but when I went to remove the dead one today, I realized I have never seen a connection like the ones on my car. There appears to be a bolt with a ring around it and no nut on the bottom connecting the cable to the battery posts. There are posts coming from the battery with hex that would match a wrench, but they appear to be battery posts and not something to remove to put cables on a new battery. Any ideas? Thanks.