Why don't you get the oem camera for the same money? This kit is all you need.
https://www.aliexpress.com/item/400...68#1000022185#1000066056#0_668#3422#15392#547
I saw a lot of variants:
1. this one mentioned by you which according me is connected to 6 a 12pin (video signal) and another wires are data CAN, which can be identified by system without Fault codes in obd diagnostics
2. only CCD camera connected to 6 a 12pin - probably errors in obd? for eg.
https://www.car-interface.com/vendi...hstandard-reverse-camera-input-interface.html
it looks like it adds CAN wires and CAN identification of camera (generic values?)
4. additional INTERFACE UNIT B)

Seat Leon - Reverse Reversing Camera Kit ( 5F ) 2013 to 2020
Seat Leon - Reverse Reversing Camera Kit. Model Years 2013 to 2020 ( 5F ) with MIB unit in the Glovebox and Factory Fitted Display Screen

Can anybody explain this problematic? dont know which works fine, or if it is sufficient to only feed camera to 6 a 12pin and it will work on my Leon 2015 MHI2 Navi Plus, HDD, GPS, front and rear parking sensors. Thanks