OE Quality
60-Day Returns

Standard Ignition NS-66 Neutral Safety Switch
Overview of Standard Ignition NS-66 Neutral Safety Switch
The Standard Ignition NS-66 Neutral Safety Switch is designed for reliable electrical performance in select Ford and Mercury vehicles. This black switch features a durable aluminum and plastic finish, engineered to meet the specific needs of Ford Escort, Mercury Lynx, and Ford Tempo models.
- Color: Black for easy identification and compatibility
- Connector Gender: Female with one connector for secure connection
- Terminal Gender: Male with two pin-type terminals for reliable electrical contact
- Finish: Combination of aluminum and plastic for durability and corrosion resistance
- Compatible with Ford Escort, Mercury Lynx, and Ford Tempo vehicles
Detailed Product Description
The NS-66 neutral safety switch from Standard Ignition is a critical component in the starting system of your vehicle. It prevents the engine from starting unless the transmission is in neutral or park, ensuring safety during ignition. The switch’s black color and aluminum-plastic finish provide both functional durability and resistance to environmental factors. Featuring a female connector with one connection point and two male pin terminals, this switch ensures a secure and stable electrical connection within the vehicle’s wiring harness.
Applications and Problem Resolution
This neutral safety switch is specifically compatible with Ford Escort, Mercury Lynx, and Ford Tempo models, making it a precise replacement part for these vehicles. It addresses several common issues, including:
- Engine not starting due to faulty neutral safety switch
- Intermittent starting problems related to poor electrical connections
- Safety concerns from starting the vehicle in gear
- Transmission shift lock malfunctions
- Electrical shorts or corrosion in the switch terminals
Installation Notes and Tips
When installing the Standard Ignition NS-66 neutral safety switch, ensure the vehicle is in park or neutral and the ignition is off. Disconnect the battery before beginning installation to prevent electrical shorts. Carefully connect the female connector and verify the two male pin terminals are securely seated. Proper alignment and secure mounting are essential for correct switch operation. Refer to the vehicle’s service manual for specific torque specifications and adjustment procedures.
Quality Assurance and Warranty
Standard Ignition parts are manufactured to meet or exceed OEM specifications, ensuring reliable performance and fitment. The NS-66 neutral safety switch undergoes rigorous quality control to maintain consistent electrical and mechanical standards. Warranty coverage details should be confirmed with the product documentation or supplier, as it may vary by region.
| Brand | Standard Ignition |
|---|---|
| Part Number | NS-66 |
| Color | Black |
| Connector Gender | Female |
| Finish | Aluminum, Plastic |
| Terminal Gender | Male |
| Terminal Type | Pins |
This part fits 18 vehicles. Search below:
| Year | Make | Model | Transmission | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|---|
| 1994 | Ford | Tempo | Manual | 2.3L | L4 | N/A | |
| 1993 | Ford | Tempo | Manual | 2.3L | L4 | N/A | |
| 1992 | Ford | Tempo | Manual | 2.3L | L4 | N/A | |
| 1990 | Ford | Escort | Manual | N/A | Mounted on Transmission | ||
| 1989 | Ford | Escort | Manual | N/A | Mounted on Transmission | ||
| 1989 | Ford | Tempo | Manual | N/A | |||
| 1988 | Ford | Escort | Manual | N/A | Mounted on Transmission | ||
| 1988 | Ford | Tempo | Manual | N/A | |||
| 1987 | Ford | Escort | Manual | N/A | Mounted on Transmission | ||
| 1987 | Ford | Tempo | Manual | N/A | |||
| 1987 | Mercury | Lynx | Manual | 1.9L | L4 | N/A | Mounted on Transmission |
| 1987 | Mercury | Lynx | Manual | 2.0L | L4 | N/A | Mounted on Transmission |
| 1986 | Ford | Escort | Manual | N/A | Mounted on Transmission | ||
| 1986 | Ford | Tempo | Manual | N/A | |||
| 1985 | Ford | Escort | Manual | N/A | Mounted on Transmission | ||
| 1985 | Ford | Tempo | Manual | N/A | |||
| 1984 | Ford | Escort | Manual | N/A | Mounted on Transmission | ||
| 1984 | Ford | Tempo | Manual | N/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:
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.