Description: Red Line: Positive input voltage Black: Negative input voltage & negative output voltage Yellow wire: Positive output voltage Specification:NO.001: Red line input: 48V-72 V Yellow line Shucu: 12V 10 A Black line: shared negative Rated power: 130WNO.002: Red line input: 48V-120 V Yellow line Shucu: 12V 10 A Black line: shared negative Rated power: 130WNO.003: Red line input: 48V-120 V Yellow line Shucu: 12V 20 A Black line: shared negative Rated power: 250WNO.004: Red line input: 48V-120 V Yellow line Shucu: 12V 30 A Black line: shared negative Rated power: 360 W Package Included:1 X Scooter Power Converter