Provided is a wiring module configured to be attached to a power storage device group in which a plurality of power storage devices are lined up, the wiring module including a voltage detection wire to be connected to at least one of the plurality of power storage devices. An insulation protector is configured with an engagement receiving portion. A detection wire cover covers the voltage detection wire and includes a cover engagement portion that engages with the engagement receiving portion. A cover support portion is formed in the insulation protector, the cover support portion abutting against the detection wire cover from a direction opposite to a disengagement direction in which the engagement portion and the engagement receiving portion disengage from each other, when a force is applied to the detection wire cover in the disengagement direction.