An electrical connector for an electrical connection is disclosed, comprising a female receptacle to connect to either a male shorting cap or a male plug. The male plug and female receptacle can be fastened to a standard knockout in a light fixture. The male plug and female receptacle have alignment means such that they can only fit together one way, and once together are positively connected by means of a twist-lock ring. The male plug is connected to the female receptacle by aligning the two fins to the two corresponding grooves, and pushing inward such that the protrusions of the female receptacle pass through the indentations in the ring of the male plug. The twist-lock ring is turned and the nubs on the protrusions engage the notches of the female receptacle, creating a removable twist-lock ring.