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Replacing audio 20 with ntg 4.0

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Old Jun 17, 2024 | 10:50 AM
  #1  
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C220
Replacing audio 20 with ntg 4.0

Hello everyone. I have a late 2007 mercedes c220 w204 still fitted with audio 20. I recently purchased a used ntg 4.0 together with radio and air vent. I was trying to replace it but notice that some cables are not the same, mainly to the screen.

Can someone help and tell me what cables do I need to purchase to finish the conversion?
Thanks
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Old Jun 17, 2024 | 06:50 PM
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W204 2010 C300 4matic Sport M272
Appears there are many part #'s for the cables, I wouldnt know which goes to what you have specifically. Not sure if you can just replace one wire, or if an entire harness is needed looking at part 50 and 100 in the diagram below.

Heres a link to the diagrams, i was looking in section 54. Electrical Equipment and Instruments. https://nemigaparts.com/cat_spares/e...fg/204081/62p/












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Old Jun 19, 2024 | 04:02 PM
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Originally Posted by TimC300
Appears there are many part #'s for the cables, I wouldnt know which goes to what you have specifically. Not sure if you can just replace one wire, or if an entire harness is needed looking at part 50 and 100 in the diagram below.

Heres a link to the diagrams, i was looking in section 54. Electrical Equipment and Instruments. https://nemigaparts.com/cat_spares/e...fg/204081/62p/








thanks for your help. I manage to buy the radio, screen and air vents. I've also bought a retrofit cable. (All attached in the pictures).
I've finally made it to work.. Or almost... The screen only works for a while or just stays black.
I am doing something wrong. Or is probably a defect on my second hand screen?​​​​​​​


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Old Feb 13, 2025 | 04:33 PM
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Same issues

Hi

Ive got the exact same issues. Can you please help where to purchase the cables. Did you buy them both?
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Old Feb 14, 2025 | 02:33 AM
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Originally Posted by Gielvanderlaak
Hi

Ive got the exact same issues. Can you please help where to purchase the cables. Did you buy them both?
I have only purchased the second one. A Retrofit Audio 20 a Comand NTG4 Mercedes Classe C W204 -
After this it worked. (Just don't remembered if it needed to be plugged into one of those Mercedes fault detection machines.)
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Old Feb 17, 2025 | 10:12 AM
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Originally Posted by Lmmadeira
I have only purchased the second one. A Retrofit Audio 20 a Comand NTG4 Mercedes Classe C W204 -
After this it worked. (Just don't remembered if it needed to be plugged into one of those Mercedes fault detection machines.)

Do you mean this one?
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Old Feb 20, 2025 | 10:11 AM
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Originally Posted by Gielvanderlaak
Do you mean this one?
exactly
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Old Oct 23, 2025 | 01:08 AM
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Originally Posted by Lmmadeira
exactly
can you please provide the link which you purchase the the cable from?

Thanks
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