Morris Products 10754 Insulation Displacement Connector, 3 Port, Red, 19-26 Wire Range (Pack of 25) Insulation Displacement Connectors (IDC) UR 3 Port - 3 Port Cable Connector for quickly splicing into Copper Wire. Insulation Displacement Connectors (IDC) UR 3 Port features include: 3 port wire butt splice taps onto service lines in ready access cases for pedestal mounts, pigtail joints or tap onto load coils such as toll cable splicing IDC connectors create fast splice and tap