Abstract: An electrical connector block for a flat ribbon cable having a plurality of conductors lying side-by-side in an insulating ribbon comprises a base having a plurality of terminals extending therethrough lying in a plurality of rows. Each terminal has an upper connection end a lower insulation-piercing end. At least one terminal is aligned with each conductor in the ribbon so that, when the base is pressed against the ribbon, the terminals contact the conductors of the ribbon. Components can be connected between terminals of each row and held on the base for interconnecting conductors in the ribbon or connecting the conductors to a ground. A top cover includes a recess for covering the components and is engaged over the base while a bottom cover is engaged under the base and includes a plurality of slots for accommodating any displacement of the ribbon after it has been pierced by the insulation-piercing ends of the terminals.