How to pigtail aluminum wiring to copper - YouTube
Copper to Aluminum Connectors, Copper Aluminum Wire Connectors with 2 Port, Aluminum to Copper Lug, Safe Aluminum to Copper Wire Connectors for Aluminum Wire Repair (10): Amazon.com: Industrial & Scientific
Aluminum to Copper electrical connectors
Alumiconn Al/Cu Wire Connectors 3-Ports Purple (2-Pack) in the Wire Connectors department at Lowes.com
Thomas & Betts Part # APS06 - Thomas & Betts Aluminum And Copper Wire Split Bolt Connector For #2-9 Stranded Aluminum - Wire Connectors - Home Depot Pro
Ideal Industries Buchanan 30-165 Twister Aluminum Copper Al Cu Winged Wire Connector 18-12 AWG 600 Volt Purple 1=Qty 25