An electrical insulation displacement connector (IDC) assembly includes a body having at least one channel with an open top side for receipt of an insulated conductive core wire. A contact element is fixed in the body with a first insulation displacement end defined by opposed blades oriented across the channel, and a second end extending from a bottom surface of the body for electrical contact with a PCB. The IDC assembly includes a cap having a size and configuration to engage over the body, with the cap including a recess with an open bottom that is aligned with the body channel in a fitted configuration of the cap on the body. The wires may be initially received in the cap recesses wherein upon pressing engagement of the cap onto the body, the insulated conductive core wire is pressed into the body channel between the contact element.