Two forms of insulation-displacement connection devices and panels of such devices are disclosed; the connection devices of each of the panels include upstanding connectors bent to provide paired wire-gripping finger portions in a plane parallel to the related panel. Each form of the connecting devices includes a rotor operable about an axis perpendicular to the related panel, the rotor being arranged to drive upstanding inserted wires broadside--parallel to the rotor's axis--from starting positions opposite to the ends of the pairs of wire-gripping finger portions to end positions gripped between the wire-gripping finger portions. The wire's insulation is displaced and the center conductor of the wire is bared locally as the wire is forced between the wire-gripping finger portions. In both embodiments, there are two pairs of wire-gripping finger portions, at opposite sides of the rotor's axis. The free ends of the wire-gripping portions are pre-biased toward each other, for augmenting the insulation-displacement forces of the paired wire-gripping finger portions.