Can it be done?

[mrk777punto]

Hi there ive got a fiat punto grande and i want to upgrade the sound system (i.e add a subwoofer (maybe kenwood), amp and 2 6x9 speakers) however i want to keep the original Blaupunkt cd/mp3 steareo because of the bluetooth and what not. Well my question is if i connect the amp and the sub to the original stereo as i dont understand what i have to do. Thanks in advance
mark

 

[jug]

i'm not sure if the original headunit has a pre-out for the amp.
ask in the ICE section or the grande punto section.

 

[mrk777punto]

thanks