HomeElectrical, Lighting and Body > SwitchesStandard Ignition NS-49 Neutral Safety Switch
Part #: NS-49

Standard Ignition NS-49 Neutral Safety Switch

⚙️ 25 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: Buick, Oldsmobile, Chevrolet, and Pontiac, Century, Cutlass Ciera, Celebrity, Lumina APV, Cutlass Cruiser, Silhouette, 6000, and Trans Sport
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Overview of Standard Ignition NS-49 Neutral Safety Switch

The Standard Ignition NS-49 Neutral Safety Switch is designed for reliable electrical performance in select Buick, Chevrolet, Oldsmobile, and Pontiac vehicles. This switch ensures proper engine starting by preventing the vehicle from starting in gear, enhancing safety and functionality.

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

Detailed Product Description

The NS-49 neutral safety switch from Standard Ignition features a single female connector and seven male blade terminals, providing secure and precise electrical connections. The blade terminal design supports easy installation and reliable contact, minimizing the risk of electrical faults. This part is engineered to meet the specifications required for various Buick, Chevrolet, Oldsmobile, and Pontiac models, including the Buick Century, Chevrolet Celebrity, Oldsmobile Cutlass Ciera, Pontiac 6000, and several minivan models like the Lumina APV, Silhouette, and Trans Sport.

Compatible Vehicles and Applications

This neutral safety switch is compatible with the following makes and models:

  • Buick Century
  • Chevrolet Celebrity
  • Oldsmobile Cutlass Ciera and Cutlass Cruiser
  • Pontiac 6000
  • Chevrolet Lumina APV, Silhouette, and Trans Sport

Common Issues Addressed by the NS-49 Neutral Safety Switch

  • Prevents engine from starting when the transmission is in gear
  • Eliminates intermittent starting problems related to faulty switch connections
  • Resolves electrical shorts caused by worn or damaged terminals
  • Ensures proper signal transmission to the starter circuit
  • Improves overall vehicle safety during ignition

Installation Notes and Tips

  • Verify vehicle compatibility with the NS-49 part number before installation
  • Ensure the female connector and blade terminals align correctly with the vehicle wiring harness
  • Disconnect the battery before beginning installation to prevent electrical shorts
  • Inspect the wiring harness for damage or corrosion prior to connecting the switch
  • Test the switch operation after installation to confirm proper function

Quality Assurance and Warranty

Standard Ignition parts are manufactured to meet or exceed OEM specifications, ensuring dependable performance. The NS-49 neutral safety switch undergoes rigorous quality control to maintain electrical integrity and durability. Warranty coverage details should be confirmed with the product documentation or supplier.

BrandStandard Ignition
Part NumberNS-49
Connector GenderFemale
Terminal GenderMale
Terminal TypeBlade Terminals

This part fits 25 vehicles. Search below:

YearMakeModelTransmissionPositionNotes
1991BuickCenturyN/A
1991OldsmobileCutlass CieraAutomaticN/A
1990BuickCenturyAutomaticN/AStamping No. 1994284
1990BuickCenturyN/A
1990ChevroletCelebrityAutomaticN/A
1990ChevroletLumina APVN/A
1990ChevroletLumina APVAutomaticN/A
1990OldsmobileCutlass CieraAutomaticN/A
1990OldsmobileCutlass CruiserN/A
1990OldsmobileSilhouetteN/A
1990OldsmobileSilhouetteAutomaticN/A
1990Pontiac6000AutomaticN/A
1990PontiacTrans SportN/A
1990PontiacTrans SportAutomaticN/A
1989BuickCenturyAutomaticN/AStamping No. 1994284
1989BuickCenturyN/A
1989ChevroletCelebrityAutomaticN/A
1989OldsmobileCutlass CieraAutomaticN/A
1989OldsmobileCutlass CruiserN/A
1989Pontiac6000AutomaticN/A
1988BuickCenturyAutomaticN/AStamping No. 1994284
1988BuickCenturyN/A
1988ChevroletCelebrityAutomaticN/A
1988OldsmobileCutlass CieraAutomaticN/A
1988Pontiac6000AutomaticN/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:

0199429019942841S521053-31583DR456NS54NS6540S9213

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