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A selector connects terminals. Its physical layout must match the circuit you are wiring.
A closed contact provides a conductive path between terminals. An open contact interrupts that path. A selector is a set of these connections, not an electronic mixer with its own gain.
In the shared Les Paul topology, Neck connects the neck volume output to the common output, Bridge connects the bridge volume output, and Both connects both branches. Circuit Lab shows the actual closed contacts and traces to the jack. Connecting Both physically does not mean Signal Lab has a validated coupled response model.
Common means the shared output contact in this context. Switch terminal positions vary by construction. Use the exact switch specification and a continuity test with the guitar disconnected; do not infer terminal function from its location alone.
Circuit Lab explains paths and contacts. Wiring Generator presents physical destinations. More complex switch topology and coil-level response are not added by this guide.
Inspect the supported circuit topology, contacts and conductive paths. Each example opens a supported starting circuit; it does not identify your actual guitar or pickup measurements.
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