Hey guys, posting for my father who installed Xtrons Android PSA1053BL radio in his 2005 X5 4.8iS using the additional harness to the rear DSP amp required. The radio powers on no issues but we can't get any audio. With the factory radio there was audio.

We have connected everything but not 100% sure if something is missing? My guess is the DSP amp is not getting powered on.

Pic for reference:

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