Power Panel (klein) Graupner 1687 The power panel is suitable for installation into a start box, serving as central power supply and switch station. 12 Volts For hook-up of an electric starter. 6/12 Volts For hook-up of a fuel pump with «fill/OFF/drain» three-position switch. 1.5 Volts With infinitely variable heating current for glow-plug ampere meter display. Dimensions: 150 x 90 mm, installation depth 30 mm. A 12 V battery of adequate capacity is required to provide the necessary voltage.