This article shows how to wire one, covering three scenarios: an AC ceiling LED light, a simple DC LED light, and an LED strip light. The general procedure to wire a DC LED light is to connect the positive (+) and negative (-) wires to the power supply's corresponding terminals. You can connect an LED strip to an adapter and then plug it in to power it. Use scissors to cut the strips to your desired length, cutting. LED lights produce much light without drawing high currents like the old incandescent ones and can also operate on DC rather than AC. A LED light fixture wiring diagram provides a visual representation of how the various components of the fixture are connected.