Some do but it's best not to use what they give you as it's usually too thin.
I have mine amped via an amp in the boot and because of the higher output I have run thicker cable.
But I have done my girlfriends via the cable that originally went to the speaker.
I have mine amped via an amp in the boot and because of the higher output I have run thicker cable.
But I have done my girlfriends via the cable that originally went to the speaker.