Hi All, I have searched all the forums and seem to find bits of info regarding the installation of an aftermarket stereo in a Grande Punto. I have managed to remove the OEM stereo and connect the aftermarket stereo with the following equipment but get no power to the stereo:

I was then told to buy one of these:
I understand that I need to run the piggy back fuse from the fusebox, but where does it connect to from there? I want the stereo to switch off when I switch the ignition off.

I was then told to buy one of these:

I understand that I need to run the piggy back fuse from the fusebox, but where does it connect to from there? I want the stereo to switch off when I switch the ignition off.