That terminal block is real handy! However, there are some caveats to it. On earlier models, all three terminals came from the factory pre-wired. Somewhere along the line (2013?) Polaris decided to stop wiring the ground (middle) and 'Always Hot' (left in Slim's picture). The Keyed Hot will always be pre-wired and can be identified by an orange wire coming off of it. If you order some Polaris accessories (radio, winch, ?), the dealer will add another harness that comes off the battery and makes the Always Hot and ground usable to you.
As Redfish1 discovered, the Keyed Hot stud is protected by a 20 amp fuse and that circuit also feeds the accessory (cigarette lighter) plugs in your cabin and on some models, it also feeds the AWD switch. So if you are going to use the Keyed Hot stud, you have some math to do! The total of all the accessories, whatever you have plugged into the cigarette lighters, and the AWD drive activation (I'm guessing 2 or 3 amps) cannot exceed 20 amps - at least, no more that 20 amps used at the same time.
If your terminal block is not completely wired, you can order the harness from your dealer, or you can make your own pretty easily. There is no pre-wired circuit for the 'Always Hot' so the only amp limitation is the size of the cable feeding the stud. If you use 6ga cable, you should be good up to ~61 total amps.