The Kussmaul Dual USB Charging Port is a quick and easy way to recharge electronic devices in the patrol vehicle. Its 4.8 Amps max output allows charging of 2 iPads/tablets at the same time and the built-in LED indicator shows when the device is powered. Designed for easy installation in SVR type vehicle switch panels; can be connected to 12V or 24V switched ignition or directly to battery. Is designed to fit into a standard 1.45” x 0.83” panel cutout. Connect the red wire to either +12 Volts continuous (battery positive) or switched 12 Volt power (ignition) using a 3 Amp fuse. Connect the black wire directly to chassis ground (battery negative).