An electrical insulation displacement connector (IDC) assembly includes a body having at least one channel with an open top side configured for receipt of an insulated conductive core wire therein. 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 and configured for electrical contact with a PCB. The IDC assembly includes a cap having a size and configuration so as 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 and into the contact element.