On a three-way, there’s an additional terminal, known as the “widespread.” Power is available in to the switch about the prevalent, then two “traveler” wires connect the first switch to the second around the brass terminals. DIYers shouldn't, nevertheless, try working new wiring them selves—that’s a position for an electrician. https://p-hub-system77661.blog-kids.com/35012572/the-best-side-of-safe-electrical-wiring