HomeElectrical, Lighting and Body > SwitchesStandard Ignition NS-50 Neutral Safety Switch
Part #: NS-50

Standard Ignition NS-50 Neutral Safety Switch

⚙️ 3 vehicles fit this part
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Select your vehicle to confirm fitment
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OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Chevrolet, Oldsmobile, and Pontiac, Lumina, Cutlass Supreme, and Grand Prix
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Overview of Standard Ignition NS-50 Neutral Safety Switch

The Standard Ignition NS-50 Neutral Safety Switch is designed for reliable electrical performance in select Chevrolet, Oldsmobile, and Pontiac vehicles. This switch ensures proper starting system operation by preventing the engine from starting unless the transmission is in neutral or park.

  • Connector Gender: Female
  • Connector Quantity: 1
  • Terminal Gender: Male
  • Terminal Quantity: 7
  • Terminal Type: Blade & pin

Technical Details and Compatibility

The NS-50 neutral safety switch features a single female connector and seven male terminals with blade and pin types, providing secure and precise electrical connections. This part is compatible with Chevrolet Lumina, Oldsmobile Cutlass Supreme, and Pontiac Grand Prix models, ensuring proper fitment and function. The blade and pin terminal design supports durability and ease of installation in the vehicle's electrical system.

Function and Application

This neutral safety switch is essential for preventing engine start in unsafe gear positions. It is commonly used to address issues such as:

  • Engine not starting when the transmission is in park or neutral
  • Intermittent starting problems related to faulty switch connections
  • Electrical shorts or open circuits in the starting system
  • Transmission range sensor malfunctions affecting vehicle safety

Installation Notes and Tips

  • Ensure the vehicle is in park or neutral before installation
  • Disconnect the battery to prevent electrical shorts during replacement
  • Verify connector orientation: the NS-50 uses a female connector with one connection point
  • Check that all seven male blade and pin terminals are properly seated
  • Test the switch operation before finalizing installation

Quality Assurance and Warranty

Standard Ignition parts are manufactured to meet or exceed OEM specifications. The NS-50 neutral safety switch undergoes rigorous quality control to ensure reliable performance in Chevrolet, Oldsmobile, and Pontiac vehicles. Warranty coverage details are provided by Standard Ignition and typically include protection against defects in materials and workmanship.

BrandStandard Ignition
Part NumberNS-50
Connector GenderFemale
Terminal GenderMale
Terminal TypeBlade & Pin

This part fits 3 vehicles. Search below:

YearMakeModelTransmissionPositionNotes
1990ChevroletLuminaAutomaticN/A
1990OldsmobileCutlass SupremeAutomaticN/A
1990PontiacGrand PrixAutomaticN/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:

0199429019942881S5210DR456NS55NS6533S9206

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