Snow Blowers

I am installing my 2 stage Husqvarna snow blower on to my Husqvarna GT52XLS garden tractor. I am at the step where I am hooking up the power to the winch (I got the option of the electrical lift). Along the wiring, is a black box. The instructions say it would mount to the right of the battery, but I see no where to connect it so that it isn't flopping around. What am I missing? Picture is attached.