A first trunk line of a wire harness is inserted into a wire harness insertion space of a protector main body, and branch lines pulled out and branching to the left and right from the outlet are respectively bound to a second trunk line routed in left and right directions to form a triangular space enclosed by the left and right branch lines and the second trunk line. An elongated portion projecting to a position covering the triangular space is provided to the lid which makes a lock connection to close an opening of the protector main body, and while a male engagement portion protrudes on the elongated portion, a female engagement portion to which the male engagement portion engages and latches is provided from the bottom wall of the protector main body, and the lid connects to the protector main body in the triangular space.