Typical cost range to pigtail aluminum wiring in an existing home is approximately $2,000-$6,000 for a standard retrofit, depending on the number of outlets and the need for panel or breaker upgrades. This article provides practical cost estimates in USD with low, average, and high ranges. Assumptions: region, specs, labor hours. The copper pigtail then connects to the device, effectively isolating the aluminum conductor from the terminal, which. Homeowners typically pay for copper pigtails, connector kits, and skilled labor to replace aluminum wiring with safer copper pigtails. This. The average cost to hire an electrician to install or repair light fixtures, outlets, switches, or fans ranges from $141 to $419 with homeowners spending $280 on average.