A connector includes a connector housing and a branched joint terminal for branching a primary line to a plurality of secondary lines. The connector housing has a plurality of terminal housing extending parallel to each other and opening at the front side for accommodating one terminal connected to the primary line or to the secondary line (5B). The connector housing is provided with grooves extending between the side walls thereof and crossing the terminal housing. Thus extended formed groove is also opened at the front side for receiving the joint terminal therein. When joint terminal is placed in the groove, the first and second terminals accommodated in the terminal housing are electrically connected through the joint terminal so that the primary line is branched and connected to the secondary terminals.
