I have a 1997 MB S320 with bose

I've changed the head unit from the stock tape/radio to an audio 10 that plugged right in with no modifications.

I recently removed the dash to replace my evaporator core and upon reinstalling it i checked to see if the speakers were working and it didn't sound so. I see no movement in the speakers, dont know if i should or not.

Is there some sort of diagnostic i could run? It is possible that the audio10 headunit doesn't support all of my speakers?

The speakers on top in the dash are for the phone option only. Music comes from the front/rear doors and one little speaker near the rear view mirror on top.

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99 C43
98 S420
99 C230K
01 C240

Thank you

I had just plugged up my phone and they were working for it so i was about to go mad.