LED waterproof light string

A light emitting diode (LED) waterproof light string, comprising:

• a plurality of light-emitting subunits connected in series, wherein:
• each of the plurality of light-emitting subunits comprises a housing, an input wire assembly, an output wire assembly, and two light source boards,
• the input wire assembly and the housing are integrally formed by an injection molding process,
• a side of the housing away from the input wire assembly comprises a groove on which the output wire assembly is mounted,
• a sealing ring is disposed between the output wire assembly and a bottom of the groove,
• the output wire assembly comprises one or more mounting holes for one or more bolts to pass through,
• after the one or more bolts pass through the one or more mounting holes, the output wire assembly and the sealing ring are in an interference fit,
• the two light source boards are respectively fixedly connected to the input wire assembly and the output wire assembly, and
• an output end pad of a first one of the two light source boards connected to the input wire assembly is connected to an input end pad of a second one of the two light source boards connected to the output wire assembly through an intermediate power wire.