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Standard Ignition NS-99 Neutral Safety Switch
| Brand | Standard Ignition NS-99 |
|---|---|
| Color | Black |
| Connector Gender | Male |
| Finish | Aluminum, Plastic |
| Terminal Gender | Male |
| Terminal Type | Blade |
| Fits | Nissan and INFINITI · 19 vehicles |
Bolt-mount design. Installs securely with a rectangular connector and blade terminals.
Metal construction. Built with aluminum and plastic for durable electrical operation.
12V switch. Made for reliable neutral safety circuit control.
Cross-references Standard Ignition NS-99, 3191831X08 and JA4006 for the same application. See all 5.
Neutral Safety Switch for Nissan and INFINITI
Standard Ignition NS-99 is a 12V neutral safety switch built with a bolt-mount design, rectangular connector, and 4 blade terminals. It is a direct-fit electrical replacement for select Nissan Sentra, Nissan 200SX, INFINITI G20, and Nissan NX applications from 1991 through 1999.
Key Features
- Neutral safety switch for automatic transmission starting circuit control
- 12V electrical design with 4 terminal blade connection
- Male connector and male terminal configuration
- Bolt-mount attachment method for secure installation
- Black face color with aluminum and plastic finish
- Metal construction with rectangular connector shape
- Length: 4.25 in. (107.95 mm)
Detailed Description
Standard Ignition NS-99 is a replacement neutral safety switch for vehicles that require the starter circuit to engage only when the transmission is in Park or Neutral. It is listed for 1991-1999 Nissan Sentra, 1995-1998 Nissan 200SX, 1991-1993 INFINITI G20, and 1991-1993 Nissan NX. This part number, NS-99, is built with a single rectangular connector, 4 blade terminals, and a bolt-mount layout to match the original electrical and mounting style on the supported applications.
This part cross-references 3191831X08 and JA4006 for the same application.
What It Helps Resolve
- Engine will not crank in Park or Neutral
- Starter engages in the wrong gear position
- Intermittent no-start condition related to the transmission range circuit
- Faulty neutral safety switch electrical signal
- Worn or damaged switch connector interface
Installation Notes and Tips
Verify connector style, terminal count, and bolt-mount location before installation. The NS-99 uses a male connector with male blade terminals and does not include mounting hardware. Confirm the transmission selector is properly aligned after replacement so the starter interlock functions correctly.
Quality Assurance
Standard Ignition supplies replacement electrical components for service applications, and NS-99 is built to match the listed fitment and connection requirements for the supported Nissan and INFINITI models.
| Year | Make | Model | Transmission | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|---|
| 1999 | Nissan | Sentra | Automatic | 1.6L | L4 | N/A | — |
| 1998 | Nissan | 200SX | Automatic | 1.6L | L4 | N/A | — |
| 1998 | Nissan | Sentra | Automatic | 1.6L | L4 | N/A | — |
| 1997 | Nissan | 200SX | Automatic | 1.6L | L4 | N/A | — |
| 1997 | Nissan | Sentra | Automatic | 1.6L | L4 | N/A | — |
| 1996 | Nissan | 200SX | Automatic | 1.6L | L4 | N/A | — |
| 1996 | Nissan | Sentra | Automatic | 1.6L | L4 | N/A | — |
| 1995 | Nissan | 200SX | Automatic | 1.6L | L4 | N/A | — |
| 1995 | Nissan | Sentra | Automatic | — | — | N/A | — |
| 1994 | Nissan | Sentra | Automatic | 1.6L | L4 | N/A | — |
| 1993 | INFINITI | G20 | Automatic | — | — | N/A | — |
| 1993 | Nissan | NX | Automatic | — | — | N/A | — |
| 1993 | Nissan | Sentra | Automatic | 1.6L | L4 | N/A | — |
| 1992 | INFINITI | G20 | Automatic | — | — | N/A | — |
| 1992 | Nissan | NX | Automatic | — | — | N/A | — |
| 1992 | Nissan | Sentra | Automatic | — | — | N/A | — |
| 1991 | INFINITI | G20 | Automatic | — | — | N/A | — |
| 1991 | Nissan | NX | Automatic | — | — | N/A | — |
| 1991 | Nissan | Sentra | Automatic | — | — | N/A | — |
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