A connector includes first wire-holding portions (3) for holding power-supplying wires (2) in a juxtaposed manner, a second wire-holding portion (6) for alternately holding earth wires (4) and signal-purpose or power-receiving wires (5) for auxiliary equipments in a juxtaposed manner in a direction substantially perpendicular to a longitudinal direction of the wires (2) held by the first wire holding portions (3), a plurality of press-contacting joint terminals (8), each including a second press-contacting terminal (18) for connection to the corresponding signal-purpose or power-receiving wire (5) and a first press-contacting terminal (17) which is connected to the second press-contacting terminal (18), and can be connected to the corresponding wire (2) held by the first wire-holding portions (3), and an earth terminal (9) which can be connected to the earth wires (4) and can be connected to an earth side.