Standard Ignition NS-131 Clutch Starter Safety Switch

Clutch Starter Safety Switch for Ford Applications

The Standard Ignition NS-131 clutch starter safety switch is built for Ford and Mercury vehicles that rely on a precise clutch interlock signal before the starter circuit engages. With a black plastic finish, female connector, male blade terminals, and copper alloy conductors, it is engineered for stable electrical transfer and consistent switching performance.

Use this NS-131 switch when servicing a Ford Mustang, Focus, Explorer, Explorer Sport Trac, GT, Contour, or Mercury Cougar and Mystique with a clutch-start safety circuit.

Key Features

• Standard Ignition NS-131 clutch starter safety switch
• Black plastic housing for under-dash service locations
• Female connector with 1 connector interface
• Male blade terminals with 2 terminal blades
• Copper alloy conductors for low-resistance electrical flow
• 100% tested for mechanical and electrical switching performance
• Direct-fit service part for select Ford and Mercury manual-transmission applications

Detailed Description

The NS-131 is a clutch starter safety switch used in vehicles where the starter circuit is enabled only when the clutch pedal is in the proper position. Standard Ignition builds this switch with durable materials and copper alloy conductors to maintain reliable conductivity and reduce resistive losses during operation. It is a practical replacement for worn, intermittent, or failed clutch interlock switches on select Ford Mustang, Focus, Explorer, Explorer Sport Trac, GT, Contour, and Mercury Cougar and Mystique models. This part cross-references Standard Motor Products (e.g., NS229, NS5874) for the same application.

What It Helps Fix

• No-crank condition when the clutch pedal is pressed
• Starter engagement only after repeated pedal movement
• Intermittent starter circuit operation
• Faulty clutch interlock signal to the starting system
• Wear-related electrical switching issues at the clutch pedal assembly

Installation Notes and Tips

Verify connector style, terminal layout, and vehicle application before installation. The NS-131 uses a female connector, male blade terminals, and a black plastic body, so matching the original switch configuration is important for proper fitment. Confirm the vehicle’s build date where noted, including 2013 Ford Mustang applications built to 9/10/12. For best results, inspect the clutch pedal linkage and surrounding wiring for wear or damage before replacing the switch.

Quality Assurance

Standard Ignition states that this switch is 100% tested for both mechanical and electrical switching performance. The design uses robust materials and copper alloy conductors to support dependable service in demanding repair environments.

Compatible With

• Fits 2013 Ford Mustang, N/A, to 9/10/12
• Fits 2005-2012 Ford Mustang, N/A
• Fits 2000-2007 Ford Focus, N/A
• Fits 2005 Ford GT, N/A
• Fits 2002-2003 Ford Explorer, N/A
• Fits 2002-2003 Ford Explorer Sport Trac, N/A
• Fits 1999-2001 Mercury Cougar, N/A
• Fits 1995-2000 Ford Contour, N/A
• Fits 1995-2000 Mercury Mystique, N/A