Standard Ignition NS-142 Neutral Safety Switch

Neutral Safety Switch for Toyota Applications

Standard Ignition NS-142 is a bolt-mount neutral safety switch built for 12V electrical systems and OE-style replacement needs. It is used on select Toyota Camry, Solara, and Celica applications where accurate transmission range signaling is required for starting and shift interlock operation.

• Brand: Standard Ignition
• Part number: NS-142
• 12V electrical design
• 8 male blade terminals
• 1 female rectangular connector
• Bolt-mount attachment method
• Metal construction with aluminum and plastic finish materials
• Length: 3.875 in. (98.425 mm)
• No mounting hardware included
• No gaskets included

Detailed Product Overview

The Standard Ignition NS-142 neutral safety switch is designed for Toyota vehicles that require a direct-fit electrical switch at the transmission. It uses an 8-terminal blade layout with a single rectangular female connector and bolt-mount installation points for a secure fit. This part number NS-142 is listed for 1995-2001 Toyota Camry, 1999-2001 Toyota Solara, 1993-1997 Toyota Celica, and 1994 Toyota Camry from 8/93.

This part cross-references 8454020220 and NS5818 for the same application.

What This Switch Helps Address

• No-crank condition when the transmission is in Park or Neutral
• Intermittent starting issues tied to range-switch signal loss
• Incorrect neutral safety circuit operation
• Transmission selector signal faults affecting starter engagement
• Electrical connection problems at the transmission-mounted switch

Installation Notes and Tips

Confirm connector style, terminal count, and bolt-mount location before installation. Inspect the transmission harness connector and related wiring for corrosion, bent terminals, or heat damage before replacing the switch. Because mounting hardware and gaskets are not included, reuse or source the required installation components as needed. Verify proper adjustment and function after installation so the vehicle starts only in Park or Neutral.

Quality Assurance

Standard Ignition supplies electrical replacement parts for service applications, and NS-142 is built with a metal body and durable connector interface for transmission-mounted use. Compatible with 1993-2001 Toyota Celica, Camry, and Solara applications listed above.