A split connector comprises an open frame 2 having apertures 8 into which female housings 1 are inserted against abutments 6. Cut-away windows 14 are formed in the two side walls 9, and clamping members 15 are able to open and close via self-hinges 20. After the female housings 1 have been inserted into the apertures 8 the clamping members 15 are pivoted and locked to retain the female housings 1. A cover 3 encloses the wires and double locks the clamping members in the closed condition. In an alternative embodiment the cover itself holds the connector housings in place.