A connector includes a plurality of connection terminals, a housing, an installing part and a sealing member. Cables are connected to the connection terminals. The housing holds the connection terminals. The installing part is formed by a part of the housing, and is fitted into a mounting hole of a connection counterpart. The sealing member is provided in the installing part, and seals between the installing part and the mounting hole. Connecting tab parts provided in the connection terminals are connected to a terminal block provided at the connection counterpart side. The connection terminals includes a confluent connection terminal including a plurality of cable connecting parts to which a plurality of the cables are connected and one of the connecting tab parts.