A battery wiring module to be attached to a cell group includes a plurality of cells each having positive and negative electrode terminals. The battery wiring module includes a busbar connecting the electrode terminals, a voltage sensing terminal overlapped with the busbar and connected to one of the electrode terminals, and an insulation protector including a housing and a wire guiding groove. The voltage sensing terminal is configured to sense a state of the cell group. The busbar and the voltage sensing terminal are housed in the housing. The wire guiding groove is configured to guide a sensing wire that extends from the voltage sensing terminal to extend out of the housing. In the housing, a bus bar lock tab and a sensing terminal lock tab are formed on one elastic locking piece.
