Dont know if my 2013 PIP has an AUX in?

Well, the camera is attached to the boot lid, but the head unit displays the camera output when reversing. I presume you already have a working camera that just needs connecting? If you don't have a reversing camera at all now, then someone with skill/knowhow will likely be needed to run some wiring. I also replaced my original camera, still have that here as well..

You've lost me with the "Mint Linux" reference..

 

Duh! Yeah, I'm a 20 year Linux veteran...
When the original head unit was in the car I seem to remember it could do everything (reversing, bluetooth, MP3, cd, Aux etc) EXCEPT sat/nav. The "old" unit is actually a 2016 manufactured replacement by Toyota at the Thames factory.
Another thought: if you have working steering wheel controls for your existing head unit, the installer would need to know what to connect, and how to test..

 

There are adaptors available for connecting the reversing camera to other headunits, I wouldn't worry about that.

Your car has the expensive 100V AC 1500W inverter option installed! This was only available in Japan. This provides mains power from the traction batteries, via an additional inverter. You can plug in any mains operated device that will accept 100V AC, including low-power kettles (could import one from Japan maybe if you want). It's designed for camping or disaster preparedness. There should be a red plug adaptor that provides 100V AC outlets from the charging port too, but that might have gone missing.

I think @hieronymous is confused by the existence of this, it is an OEM optional extra and does provide mains power from the car.

 

Thanks Quantum, I will try getting a Japanese adapter for my 100-240v iPhone USB charger. I would imagine that would draw less than a kettle huh , lol I’m just worried something will go bang guess I’ll find out lol

 

It's definitely less than 1500W, probably more like 5-20W.

 

You're not missing too much. The 100V AC inverter was an optional extra, and other buttons to the right would be headlamp washers (LED only) and the MPH-km/h speedo switch (JDM wouldn't have this anyway, but my UK spec does).