HomeStandard Ignition NS-309 Neutral Safety Switch
Part #: NS-309

Standard Ignition NS-309 Neutral Safety Switch

7 vehicles fit this part
Select your vehicle to confirm fitment
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OE Direct Replacement — Bolt-on fit, no modifications needed
Fitment: Mazda, MPV
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Reliable Neutral Safety Switch for Mazda MPV

The Standard Ignition NS-309 Neutral Safety Switch is designed specifically for Mazda MPV models, ensuring precise electrical control and safety. This switch features a durable metal construction with aluminum and plastic finishes, engineered to meet the demands of your vehicle's electrical system.

  • Compatible with Mazda MPV vehicles
  • Part number NS-309 for exact fitment
  • 6 blade terminals with male connectors and female terminals
  • Bolt mount attachment method for secure installation
  • Rectangular connector shape with 2 connectors included
  • 12-volt voltage rating suitable for standard automotive systems
  • Wiring harness length of approximately 6.875 inches (174.625 mm)
  • Overall length of 4.3125 inches (109.5375 mm)
  • Color finish in silver and white for corrosion resistance

Detailed Product Description

The Standard Ignition NS-309 Neutral Safety Switch is engineered to provide reliable electrical switching for Mazda MPV vehicles. Constructed from metal with aluminum and plastic finishes, this switch offers durability and resistance to wear. It features six blade terminals with a combination of male connectors and female terminals, designed for a secure and stable electrical connection. The bolt mount attachment method ensures the switch remains firmly in place during vehicle operation. With two rectangular connectors and a wiring harness length of nearly 7 inches, this switch integrates seamlessly into the vehicle's electrical system. The 12-volt rating aligns with standard automotive electrical requirements, making it a suitable replacement part for your Mazda MPV.

Common Applications and Issues Resolved

  • Prevents engine from starting in gear, enhancing safety
  • Resolves intermittent starting problems related to faulty neutral safety switches
  • Eliminates electrical connection failures caused by worn or damaged terminals
  • Addresses issues with gear position sensor malfunctions
  • Restores proper function to the vehicle’s starting circuit

Installation Notes and Tips

  • Ensure vehicle is in park or neutral before installation
  • Disconnect the battery to prevent electrical shorts
  • Use appropriate tools for bolt mount removal and installation
  • Verify connector orientation matches the rectangular shape and terminal gender
  • Check wiring harness length compatibility with existing vehicle wiring

Quality Assurance and Warranty

Standard Ignition parts are manufactured to meet or exceed OEM specifications for fit, form, and function. The NS-309 Neutral Safety Switch undergoes rigorous quality control to ensure reliable performance in Mazda MPV vehicles. While mounting hardware and gaskets are not included, the part is designed for straightforward installation. Please refer to Standard Ignition’s warranty policy for coverage details.

BrandStandard Ignition
Part NumberNS-309
ColorSilver, White
Connector GenderMale
FinishAluminum, Plastic
Terminal GenderFemale
Terminal TypeBlade Terminals

This part fits 7 vehicles. Search below:

YearMakeModelTransmissionLitersCylindersPositionNotes
1995MazdaMPVAutomaticN/A
1994MazdaMPVAutomatic3.0LV6N/A
1993MazdaMPVAutomatic3.0LV6N/A
1992MazdaMPVAutomatic3.0LV6N/A
1991MazdaMPVAutomatic3.0LV6N/A
1990MazdaMPVAutomatic3.0LV6N/A
1989MazdaMPVAutomatic3.0LV6N/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:

18-09091S891453-31942BV1119444NS38022NS577NS6804SW6379

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