[ztodd377]

Since the car is under the warranty, I took them from the back side of infotainment connectors. Except styrofoam cut at the trunk for the woofer, no "invasive" actions on the wires and no connectors removal. If you insist on removal, audio outputs connector has kind of unlock knob, as I recall. I did it that way because at that time I was not sure on electronic behavior and possible fault light on the dashboard. When done these connections, I tested contacts with old Giulietta 4 ohms 3 holes speaker (that is, I am pretty sure, the same as in Giulia Base audio level), with no faults and than I safely connected signal lines to amplifier.

Borna,
Did you just tap into 4 of the infotainment audio output wires? How did you know which ones where the correct ones?