Quick Cable 160278-025 PVC Solderless 3 Way Connector, 16-14 Wire Gauge, Tin Plated Annealed Copper, Copper, Blue (Pack of 25): Amazon.com: Industrial & Scientific
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