Controller Essentials: Stepdown Converter 12V 10A

Want to run accessories or lights off your main battery (12V at 10A)?  

Black Box (Accepts Input of 15 - 90V)

Input from Battery:  Red(+) & Black (-)

Output to Accessories:  Yellow (+) & Black (-)

Silver Box (Accepts Input of 48 - 120V)

Input from Battery:  Red(+)

Output to Accessories:  Yellow

Common Ground:  Black