Standard Ignition NS-187 Neutral Safety Switch

Neutral Safety Switch for Nissan Applications

The Standard Ignition NS-187 neutral safety switch is a 12V electrical switch built with a metal body, black face, and bolt-mount attachment. It uses 2 rectangular connectors with male/female terminals and blade-and-pin terminal types for a direct transmission-range signal connection.

Compatible with 1990-1995 Nissan Pathfinder, 1996-1997 Nissan Pickup, and 1998-1999 Nissan Frontier, this NS-187 is a fitment-based replacement for Nissan automatic transmission starting and gear-position circuit service. It also cross-references Standard Ignition NS-187 for the same application.

Key Features

• Neutral safety switch for automatic transmission electrical control
• 12V design with 10 terminals and 10-wire harness configuration
• Metal housing with black face color
• 2 rectangular connectors with male/female connector and terminal genders
• Bolt-mount attachment method for secure installation
• Wiring harness length measures 49.125 in. (1247.775 mm)
• Switch body length measures 6.5 in. (165.1 mm)

Detailed Description

Standard Ignition NS-187 is a neutral safety switch engineered for Nissan vehicles that require a reliable transmission-position signal. It is used on 1990-1995 Nissan Pathfinder, 1996-1997 Nissan Pickup, and 1998-1999 Nissan Frontier applications, making it a practical replacement for vehicles experiencing starting-circuit or gear-indicator electrical faults. The switch features a metal construction, 2 rectangular connectors, and blade-and-pin terminals to match the original-style electrical interface.

For buyers searching for a Nissan Pathfinder neutral safety switch, Nissan Pickup neutral safety switch, or Nissan Frontier neutral safety switch, the NS-187 provides a fitment-specific solution. The part number NS-187 is also useful when cross-checking interchange references during transmission electrical repair.

Common Issues This Part Can Address

• Engine will not crank in Park or Neutral
• Intermittent starting when shifting between Park and Neutral
• Transmission range signal loss to the starting circuit
• Gear-position electrical communication problems
• Faulty neutral safety switch diagnosis during transmission service

Installation Notes and Tips

Verify the connector style, terminal count, and bolt-mount layout before installation. Confirm the transmission is in the correct position and follow the vehicle service procedure for alignment and adjustment so the switch reports Park and Neutral correctly. Inspect the harness routing and connector condition during replacement to avoid repeat electrical faults.

Quality Assurance

Standard Ignition supplies electrical replacement parts for service applications, and NS-187 is built to match the listed fitment and connector specifications for Nissan Pathfinder, Nissan Pickup, and Nissan Frontier models.