1. A structure for connecting printed circuit boards (PCBs), electrically connecting a first PCB and a second PCB with printed circuits provided thereon, the structure comprising:fixing portions formed in the first PCB and the second PCB; and
a harness to electrically connect the first PCB and the second PCB, comprising:
a pair of housings to be fixed to the fixing portions, each housing including a top housing corresponding to a top side of each of the fixing portion, a bottom housing corresponding to a bottom side of each of the fixing portion and a connecting portion to connect an end of the top housing and an end of the bottom housing;
contact terminals arranged in the housings to come into contact with the printed circuits; and
a cable connected to the contact terminals to electrically connect the pair of housings,
wherein each of the fixing portions has an opening formed to define a combining direction of the housing, and the housing has a protruding portion formed at a position corresponding to the opening to be received in the opening when the housing is combined with the fixing portion, and
wherein the protruding portion is provided at the connecting portion.