Instrument cluster question

Sorry, for all the questions, but I'm trying to prepare for replacing dash pad, instrument cluster, console bezel etc... I searched through the forum and couldn't the exact answer I was looking for. Here is my question. How many connections are on the back of my instrument cluster? I know the speedometer cable, and the big connector where the light switch is. Are there others? Does anything connect to the small circle of pins? Also, is the thing that connects to the light switch easy to remove? Is it just one connector? The are a bunch of connections there, I'm hoping they aren't all separate and I have to figure out how to get them all back on correctly. And the speedometer connection...I have reached back and felt it, does it screw off? Thanks for any help.

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