I am putting new gauges in my truck but I can't seem to pull the cluster out. I have everything removed up to that point, but after loosening all the screws it seems to still be connected in the back directly behind the speedometer(dead center). In my chiltons it says to remove some speedometer cable connector but I have no clue what that is or how to get it off if you must reach behind the dash first. I tried to remove those 3 little screws around the tach template (2 around the speedomter template) but I assume there is some sort of a nut on the back since they just spin. Any ideas how to get one of these out? Here is a picture of what im talking about...

https://www.ford-trucks.com/user_gallery/sizeimage.php?&photoid=12371&.jpg

Thanks a bunch