sudomod

Hi after a recommendation I bought https://de.aliexpress.com/item/WISECOCO ... 4c4dXeZs6r this from alienexpress.
After 3 months it finally arrived.

I was told to wire the yellow wire to my pi Zero - but there is no yellow wire. Also the board is 12V (I think it should 5V shouldn't it?)

What can I do to fix the 12V Problem ? Is there a manual for this board ?
If you have RGB Video - is there even a yellow wire because as you see on the photograph there is none

Use this “AV1” wire for the composite Input, i bought recently something similar it should work off 5v give it a try..

delete

av1 -> video pi zero
if I would use a pi3 b+ where would I put it then?

It seems it does not matter which 12V and which GND I use... But should I connect 1 GND to my controllerboard (tinkerboy) and 1 to raspi as shown in the graph. If yes should I use both grounds from the Power supply part of the board?

If it will not work - what can I do to get my board working with only 12 V? or is it possible to convert the 5V to 12?