How do you conect 4 ligths to a 4 way switch?

To connect four lights to a 4-way switch, first, ensure you have a proper understanding of the wiring system. Connect the power source to the first 3-way switch, then run the traveler wires to the 4-way switch. From the 4-way switch, connect additional traveler wires to the second 3-way switch, and then connect the lights in parallel to the power source, ensuring all grounds are properly connected. Always follow local electrical codes and safety standards, and consider hiring a professional if unsure.