HomeElectrical, Lighting and Body > SwitchesStandard Ignition NS-27 Neutral Safety Switch
Part #: NS-27

Standard Ignition NS-27 Neutral Safety Switch

⚙️ 63 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Ford and Mercury, Thunderbird, LTD, Mustang, Capri, Cougar, Marquis, Bronco II, Ranger, Fairmont, Zephyr, Granada, and Grand Marquis
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Reliable Neutral Safety Switch for Ford and Mercury Vehicles

The Standard Ignition NS-27 Neutral Safety Switch is designed to ensure safe engine starting by preventing the vehicle from starting in gear. This switch is compatible with a range of Ford and Mercury models, including the Bronco II, Mustang, and Thunderbird, providing a precise fit and reliable performance.

  • Connector Gender: Female for secure electrical connection
  • Single connector quantity for streamlined installation
  • Four male blade terminals for reliable contact
  • Blade terminal type designed for durability and ease of connection
  • Compatible with Ford and Mercury models such as Mustang, Ranger, and Grand Marquis

Technical Details and Compatibility

The NS-27 Neutral Safety Switch from Standard Ignition features a female connector and four male blade terminals, ensuring a solid and dependable electrical connection. The blade terminal type is commonly used in automotive electrical systems for its durability and ease of maintenance. This part is specifically engineered to fit Ford and Mercury vehicles including the Bronco II, Capri, Cougar, Fairmont, Grand Marquis, LTD, Marquis, Mustang, Ranger, Thunderbird, and Zephyr models. Using the correct neutral safety switch helps maintain proper vehicle safety and starting system function.

Function and Problem Resolution

  • Prevents engine from starting when the transmission is in gear
  • Eliminates issues with no-start conditions related to faulty neutral safety switches
  • Resolves intermittent starting problems caused by poor electrical connections
  • Helps avoid accidental vehicle movement during startup
  • Ensures compliance with vehicle safety standards

Installation Notes and Tips

When installing the Standard Ignition NS-27 Neutral Safety Switch, ensure the female connector is properly aligned with the vehicle’s wiring harness. Verify that all four male blade terminals are securely connected to avoid electrical faults. It is recommended to consult the vehicle’s service manual for specific installation procedures related to Ford and Mercury models. Proper installation will help maintain the switch’s functionality and vehicle safety.

Quality Assurance and Warranty

Standard Ignition parts are manufactured to meet or exceed OEM specifications, ensuring reliable performance and durability. The NS-27 Neutral Safety Switch undergoes rigorous quality control testing to provide consistent operation. Please refer to Standard Ignition’s warranty policy for coverage details on this part.

BrandStandard Ignition
Part NumberNS-27
Connector GenderFemale
Terminal GenderMale
Terminal TypeBlade

This part fits 63 vehicles. Search below:

YearMakeModelTransmissionPositionNotes
1987FordThunderbirdAutomaticN/A
1986FordLTDN/A
1986FordMustangN/A
1986FordThunderbirdAutomaticN/A
1986MercuryCapriAutomaticN/A
1986MercuryCougarAutomaticN/A
1986MercuryMarquisN/ACompact
1986MercuryMarquisAutomaticN/A
1985FordLTDN/A
1985FordMustangN/A
1985FordThunderbirdAutomaticN/A
1985MercuryCapriAutomaticN/A
1985MercuryCougarAutomaticN/A
1985MercuryMarquisN/ACompact
1985MercuryMarquisAutomaticN/A
1984FordBronco IIN/A
1984FordLTDAutomaticN/A
1984FordMustangN/A
1984FordRangerAutomaticN/A
1984FordThunderbirdAutomaticN/A
1984MercuryCapriAutomaticN/A
1984MercuryCougarAutomaticN/A
1984MercuryMarquisAutomaticN/A
1983FordFairmontN/A
1983FordLTDAutomaticN/A
1983FordMustangN/A
1983FordRangerAutomaticN/A
1983FordThunderbirdAutomaticN/A
1983MercuryCapriN/A
1983MercuryCougarAutomaticN/A
1983MercuryMarquisAutomaticN/A
1983MercuryZephyrN/A
1982FordFairmontN/A
1982FordMustangN/A
1982FordThunderbirdAutomaticN/A
1982MercuryCapriN/A
1982MercuryCougarAutomaticN/A
1982MercuryCougarN/A
1982MercuryMarquisN/ACompact
1982MercuryZephyrN/A
1981FordFairmontN/A
1981FordMustangN/A
1981FordThunderbirdAutomaticN/A
1981FordThunderbirdN/A
1981MercuryCapriAutomaticN/A
1981MercuryCapriN/A
1981MercuryCougarAutomaticN/A
1981MercuryGrand MarquisAutomaticN/A
1981MercuryMarquisAutomaticN/A
1981MercuryMarquisN/ACompact
1981MercuryZephyrN/A
1980FordFairmontN/A
1980FordMustangN/A
1980FordThunderbirdAutomaticN/A
1980FordThunderbirdN/A
1980MercuryCapriAutomaticN/A
1980MercuryCapriN/A
1980MercuryCougarAutomaticN/A
1980MercuryZephyrN/A
1979FordFairmontN/A
1979FordMustangN/A
1979MercuryCapriN/A
1979MercuryZephyrN/A

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

1S53102-8802367098C915128753-3160988923252E2DP7A247AAF413NS25NS6591S942SW1745

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.