Perko Battery Switch Wiring Diagram | Free Wiring Diagram Assortment of perko battery switch wiring diagram. A wiring diagram is a streamlined conventional photographic representation of an electrical circuit. It shows the elements of the circuit as simplified forms, and also the power and signal links between the gadgets. Battery Management Wiring Schematics for Typical Proper battery management, including switching and charging, is essential for safe and reliable operation. The following basic wiring diagrams show how batteries, battery switches, and Automatic Charging Relays are wired together from a simple single battery / single engine configuration to a two engine, one generator, and four battery bank system. PERKO Inc. PERKO Inc. - An manufacturer of marine hardware and accessories. There are many ways to use a Perko Battery On-Off Switch. The most obvious (and most common) is simply to use it to turn off your battery when in storage so that your battery does not drain as quickly and is ready to go when you are.