Marine Wiring Diagrams What Wires Do I Hook To The 12v Marine Battery To Hook Up An Auto Radio?

What wires do I hook to the 12v marine battery to hook up an auto radio? - marine wiring diagrams

The schematic has a black background, wire, a yellow "memory" wire and Id "memory" wire. I'm old fashioned and does not know what a "memory" wire ... I'm used to shows a circuit diagram DC cable in order to have the battery.