Abstract: A stuffer cap for an insulation displacement connector comprises a base, a pair of end walls, a pair of side wall and intermediate walls parallel to the end walls. The end walls each have a recess in which is arranged an outwardly extending latch which has a contact point for engaging with a ledge on the connector housing, a contact surface and an engaging point which snaps into a recess in the housing to retain the cap in position. In one embodiment, recesses in the edges of the side walls are replaced by apertures enabling removal of wires with the stuffer cap. In a further embodiment hooks are provided in the recesses which are resilient in the direction of wire insertion and rigid in the direction of wire extraction. In a further embodiment the latch extends inwards and engages with the ledge adjacent that on which the outwardly extending latch engages.