Jaque

front of TOYOTA Genuine FX-MG8867DVZT

rear of TOYOTA Genuine FX-MG8867DVZT

Hello.
So actually my car is not a Lexus, but a Toyota Harrier Hybrid 2010 which I brought with me straight from Japan.
I believe it is similar to a rx 450h 2010 or rx 400h 2009. I think the stereo part is similar looking with a rx330 but different on the back.
I was planning to change the stereo to a single din Sony MEX-N5100BT stereo.
I want to know the following information,

1. Are there any wiring diagrams on the connection part for the factory stereo displayed above?
2. I want to know the functions of each female connection slots on the stereo (especially the ones below) just to make sure I am not touching other stuff.
3. but ultimately, I would just like to know how to connect my car to a Sony MEX-N5100BT.

Thank you, for your help.