A rotary waterproof splice connector for use with a plurality of insulated wires is disclosed. The connector includes two mutually rotatable cylindrical insulating members. Wire receiving tubular passages parallel to the axis of rotation intersect a plate-like contact terminal. Rotation of the two insulating members causes the terminal to establish electrical contact with wires located in the tubular passages. A viscous sealant is stored in the tubular passages at the interface between the wires and the terminal.