Installing MEKEDE M400 In Mercedes ML350 (W164) No Audio

Udonitron

Senior Member
Apr 15, 2010
628
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Victoria
The stock radio works just fine however upon installing the new deck with the fibreoptic box properly connected I am getting no audio at all.
Odd thing is, I do not see any flashing red via the Benz optical cable when disconnected however the optical conversion box flashes.
Anyone have any similar issues or suggestions on getting the audio working or is the box/head unit defective?