Orbit Easy Seal Wire Connector (10-Pack) 57084 - The Home Depot
50Pcs Electrical Nuts Cap Outdoor Electrical Wire Connectors For Sprinkler LED Landscape Light Irrigation Valves Blue - AliExpress
Rain Bird Waterproof Grease Cap Wire Connectors - Brown | Damp/Wet Locations | Ideal for Irrigation & Landscape Lighting | Stops Corrosion in the Underground Sprinkler Valve Accessories department at Lowes.com