What is this?

I just bought my 09 2.5SL Altima a couple weeks ago. My middle dash speaker didn't work so I followed the wire and it lead beneath the left dash speaker so I looked under the steering wheel (Like I literally laid down and looked up where my pedals are# and found the speaker wire/connector disconnected. I don't know where to reconnect it at, I looked at the speaker diagrams and still cant determine where it goes. I also took off my knee panel #panel under steering wheel# and off the wire connected to the key hole there is a wire disconnect and I'm not sure where it goes, I continue up the wire and I find a smaller connector that is disconnect #it looks like my speaker connectors). Everything seems to be functioning correctly so I'm unsure what these are for, why they were disconnected or where to connect them back at. The pictures are of the wires, 2 are of the speaker wire. Can anybody with the same vehicle please help or if anybody has any idea. And none of these connect together since they are all male.