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Check the listing for details. DC 12V To DC 13.8V 30A 414W Step Up Power Supply Converter Regulator Module. Condition: New. Listed at 40.65 USD. Output curret: 30A. 1x Power Converter. Output wire color : (+)Yellow, (-)Black. Output power:414W. Input wire color : (+)Red, (-)Black. No wiring reverse short-circuit protection for this device. Thin, small size, high efficiency and easy to install.