Guitar WiringSwitchcraft
Switchcraft 12A Littel-Jax switching mono
Mono 1/4 in jack with tip shunt (normally closed)
Ts monoSwitchcraft Type 12A: 2-conductor with a switched terminal that is normally closed, typically wired to ground to mute/hum-kill when unplugged. StewMac: 0.275 in bushing; long L12A is 0.375 in. Tip is shunt.
Connections at a glance
Use the terminal labels below when planning your circuit. Check the manufacturer's documentation for your exact component revision.
| Terminal | Label | Role | Lead colour |
|---|---|---|---|
| tip | Tip | Jack tip | — |
| sleeve | Sleeve | Jack sleeve · Ground | — |
| shunt | Tip shunt (NC when empty) | Switch tag | — |
Internal connections
tip → shunt — tip to shunt