This document provides installation instructions for a 3-way switch in 3 steps or less: 1. Turn off the power at the circuit breaker and test that power is off before wiring. Use copper or copper-clad wire and consult an electrician if unsure. 2. Connect the black (hot) wire from the power source to the black (common) screw. Connect the remaining non-neutral wires to the two brass screws. Attach the green or bare wire to the green hex screw for grounding versions. 3. Mount the device, replace the wallplate, tighten screws, and restore power. Installation is complete.