In this video

Now, connect all the electrical components. Route the low-voltage wires from each LED strip or segment back to the location of your LED power supply. Use appropriate connectors (solderless connectors or soldering with heat shrink tubing) to join the wires to the LED strips, ensuring correct polarity (positive to positive, negative to negative). Connect all the low-voltage wires from your LED strips to the output terminals of your LED power supply. Finally, connect the AC input of the power supply to your main power source. This could be a standard wall outlet, a hardwired connection controlled by a wall switch, or integrated with a dimmer switch (as implied by the video's demonstration). Always ensure the main power is off at the circuit breaker before making any AC connections.