I have a 2000 GC SE 3.3L with the "infinity" sound system. I installed a new Sony head unit and can only get sound when it is on radio. CD/AUX do not make any sound. Called Sony and they said that the system that is installed is a custom Chrysler thing and that I may have to buy new speakers for the whole system.

Anyone have any advise?

Cheers!

 

did you buy a plug to wire the aftermarket head unit in?

If it works on radio it should work on CD/AUX.

I'm pointing my finger at the Sony

 

my advice is you didn't connect the infinity ground wire because it's not in the wire harness kit (assuming you used a wire adapter kit).