Amazon.com: Kits 3 Pin Way Waterproof 3-Line 3P Car Auto Wire Electrical Connector Plug with Wire AWG Marine : Automotive
Wire Connectors - Low Voltage T Tap Wire Connectors, 3 Way Wire Connector, T Type 2 Pin Solderless No Wire Stripping Required for LED Strip, Automotive Connection Fits 24-20 AWG 12 Pack
3-PIN CONNECTOR W/HEADER, 0.1" | All Electronics Corp.
2, 3 or 5 Pin Waterproof Electrical Wire Connectors (pr)
Snap-action 3-Wire Block Connector (12-28 AWG) - Pack of 3 : ID 866 : $2.95 : Adafruit Industries, Unique & fun DIY electronics and kits
3 Conductor Wire Connector Wiring in Safer & Easier Way | GKEEMARS
WAGO 221-413 3-Wire Lever Nut (50-Box) 60267606 - The Home Depot