# Switchcraft Switchcraft 12A Littel-Jax switching mono

Canonical page: https://guitarwiring.app/catalog/switchcraft-12a

Switchcraft 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.

Category: [Jacks, Shielding & Ground](<https://guitarwiring.app/catalog/category/jacks-shielding-ground/index.md>)

Manufacturer: [Switchcraft](<https://guitarwiring.app/catalog/manufacturer/switchcraft/index.md>)

Type: Ts mono

## Specifications

- Connector: Trs switching mono
- Contact Count: 3
- Is Switching: Yes
- Is Multi Contact: No

## Terminals

- tip: Tip; role: Jack tip; lead colour: not specified.
- sleeve: Sleeve; role: Jack sleeve; lead colour: not specified; ground by default.
- shunt: Tip shunt (NC when empty); role: Switch tag; lead colour: not specified.

## Internal connections

- tip → shunt: tip to shunt

## Source references

No source references listed.

## Retailer references

No retailer references listed.

This catalog is a reference, not a retailer. Illustrations are schematic. Confirm the exact component revision and manufacturer specifications before purchase or soldering.

## Use this component

[Add to my parts](<https://app.guitarwiring.app/inventory/add/switchcraft-12a>). Opens the app; sign-in, Pro access and explicit confirmation are required before anything is saved. Visiting this link does not add a part.