Scope: This guide applies to the Singer 3-post power cord plug found on many North American models, including the 15-91, 201-2, and 221 Featherweight.

Note: This specifically refers to the cord-side female plug on the wiring harness—not the terminal socket on the machine body. It excludes UK/British models with flat-blade terminals.

Replacement Options & Pricing

• New Electronic Controller: ~$30 Includes a modern, all-in-one foot controller and power cord set.
• Hybrid Resto-Mod: ~$85 Includes a vintage foot controller, new rubber foot cushions, updated wiring, and a modern machine plug. (Requires 1 vintage part).
• Full Vintage Restoration: ~$130+ Includes a fully restored vintage foot controller, new rubber foot cushions, an original-style vintage machine plug, and updated safety wiring. (Requires 2 vintage parts).

Regardless of which option you choose, the wall outlet connector will always be a modern, molded safety plug.

Single-Lead vs. Double-Lead Wiring Setups

Your total cost can also depend on whether your machine uses a single-lead or double-lead harness:

• Double-Lead (2 Cords / 4 Wires): The 3-post plug acts as a junction housing both the main power cord and the foot control cord. Rebuilding an original vintage plug in this configuration requires careful internal wire soldering and a custom Underwriter’s knot.
  • Read the step-by-step guide: Singer 2-Cord 4-Wire Bakelite 3-Post Plug
• Single-Lead (1 Cord / 2 Wires): Used when the motor controller is hardwired inside the cabinet or machine terminal block, meaning the plug only carries a single power cord to the wall. This still requires all of the same parts, they are simply arranged differently.
  • Read the step-by-step guide: Singer 1-Cord 2-Wire Bakelite 3-Post Plug

Important Considerations

• Rough Guide Only: Prices reflect standard part costs at the time of writing and do not serve as a formal shop estimate.
• Non-Black Components: Machines featuring cords, foot pedals, or plugs in colors other than standard black (or vintage dark brown Bakelite) may cost significantly more due to rare part availability.
• Colored Cord Sets: Machines originally equipped with green, gray, blue, or white cords will generally be rewired using modern black wire due to a lack of accurate reproduction colors.
• Compatibility: This guide covers North American 110V configurations only and excludes European wiring setups.