Purchasing and installing pigtails for aluminum wiring typically runs from a few hundred to several thousand dollars, depending on circuit count, wire gauges, and labor. The main cost drivers are material choices, labor time, and the need for anti-oxidation connectors and proper. Prices to pigtail aluminum wiring vary widely based on home size, number of outlets and devices, and whether upgrades to panels or breakers are required. Assumptions: region, wiring. Pigtailing is the industry-standard repair method for addressing safety concerns associated with single-strand aluminum branch circuit wiring installed in residential homes between the mid-1960s and mid-1970s. This. Insulated Pigtail, 12 AWG Solid Copper Lead stripped 1", Length: 7-1/2". 100% end-face, 3D interferometer, IL & RL tested.