Hello.
I´m a new member and i have a problem with missing sound from speakers after installing a 2 Din multimedia player in my Croma 2006.

Hi and welcome to the Forum.
A little bit more information would be useful so we can try to help. Here is a list of questions to start with.
Did the original Fiat radio work before you took it out?
What make and model is the replacement unit?
Is the replacement unit new?
Did you use an adaptor cable?
If you did not use an adaptor cable how did you connect the new unit?

Robert

Hi
The old radio/cd player was a factory installed Blaupunkt and was working fine.
The new one is bought via Ebay made in China.Its a multimedia player incl.car navigation.It has an Din adaptor to witch I had to add a wire from terminal 15 on the car.I tested the device with two speakers at home using a 12 v power supply and it worked fine but in the car there is only silence.The speaker system in the car has an subwoofer in the right side of the trunk.