Technical Radio wiring identification

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Technical Radio wiring identification

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cyberbird

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Aug 16, 2023
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Ljubljana
Hi,

I have Fiat Doblo 2017 1.4 t-jet Maxi Cargo.
I bought an android head unit and I received wrong connector cable. I don't care about this as long as I can properly identify pins on current connector.

This is my connector. On the left side (purple and yellow) are speakers. On the right side, black and red with green stripe are gnd and 12V.
What remains is yellow with blue stripe, red with yellow stripe and blue with green stripe. I assume these are for data.
Please help if you have any kind of information or where I can find data.

IMG_20241127_152358.jpg
 
I did find some wiring schematics on google and it kinda miatches what I have but I don't understand what it means. And Im also not sure this is the correct schematic for me.
They are yellow with blue stripe (pin 6 called illumination orange), red with yellow stripe (pin 5 called 12v output blue) and blue with green stripe (pin 7 called battery + red).
iso_wiring.jpg
 
I solved everything with chat GPT. It knew almost everything about these pins. I cross referenced everything though.
The only doubt I have left is about pin 5. This is how it describes it:

Pin 5 on Block A: Electric Antenna/Amplifier Remote Control​

Pin 5 is commonly used as a control signal for powering external devices, such as an electric antenna or an amplifier remote turn-on circuit.

I don't have electric antenna ofc.

So this pin was left unused by my previous radio, but the previous radio also had a shitty sound. Might be speakers are low quality, idk. I am not sure if I sure try to connect this pin to corresponding pin on my Android head unit or just leave it empty.. What are the odds I have some kind of amplifier in my car that needs to be turned on by radio unit?
 
With multimeter I determined yellow wire with blue stripe is Illumination wire (pin 6). It is 12V or 0V depending on whether lights are on or off.
After searching multiple posts on this forum, I found a thread talking about similar connector from Bravo I think and someone recognized pin 5 (red/yellow wire), which had same color wire as mine, as Amplifier enable. So I will go ahead and assume it is amp related.
Edit: Yea, its amp
 
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