"Marc G" wrote in message
...

There is two wiring connectors in the Fiat - one with what seems to be
seven
wires and one with four...

I'm confused by the seven - I'd expect eight, i.e. four speakers with two
wires per speaker. The block of four sounds OK, but IIRC the Punto doesn't
have an igniton switched line to the stereo so you might have to put one in
yourself, or just not worry about having the stereo turn off with the
ignition.

...and there is a incompatible block socket in the back of the Sony plus
two rca? sockets.

Like Jon says, it looks like you're missing the Sony harness.

Steve.