The outer insulating shell of the connector is made from nylon and houses a small tinned copper barrel. Pigtail connectors are an insulation displacement connector that are filled with a di-electric grease to prevent moisture from getting inside the connector. You simply insert the wires into the connector and squeeze the blue cap down with a pair of. Pigtail Connectors: Reliable, Versatile Electrical Connections Penn-Union Pigtail Connectors are designed to provide secure, high-performance connections for a wide range of electrical applications. These connectors are ideal for joining multiple conductors to a single lead, ensuring safe. Application Summary: Ford Bronco 1996, Ford Excursion 2003, Ford Expedition 2003, Ford Explorer 2003-95, Ford Explorer Sport Trac 2005-01, Ford Ranger 2011-95, Lincoln Navigator 2003, Mercury Mountaineer 2003-97 Make better electrical repairs and accessory installations with this pigtail connector. A pigtail connector is small enough to use where the space available for wiring is confined and there is not enough room to use other. Whether it's an electrical system in your car, home, or factory, the quality of the connection is essential, and that's where pigtail connectors come in. These small, often overlooked components ensure a strong, safe electrical connection.