Standard Ignition NS-243 Neutral Safety Switch

Neutral Safety Switch for Metro, Swift, Firefly

Standard Ignition NS-243 is a neutral safety switch built for accurate transmission range signaling and dependable electrical switching. It uses copper alloy conductors for strong conductivity and low resistive loss, with a design that is fully tested for mechanical and electrical performance.

Compatible with 1992-2001 Geo Metro, 1994-1998 Pontiac Firefly, 1995-1999 Suzuki Swift, and 1998-2001 Chevrolet Metro, this NS-243 replacement supports proper starting circuit operation in the vehicles listed below.

Key Features

• Neutral safety switch for automatic transmission start-circuit control
• Copper alloy conductors for efficient electrical transfer
• 100% tested for mechanical and electrical switching performance
• Gray and silver housing with aluminum and plastic finish
• 1 female connector, 9 male blade terminals
• Direct-fit style for listed Geo Metro, Pontiac Firefly, Suzuki Swift, and Chevrolet Metro applications

Detailed Description

Standard Ignition NS-243 is engineered for service professionals who need consistent switching performance in a neutral safety switch replacement. The robust construction and high-grade materials are suited to the demands of daily repair work, while the blade-plug terminal design supports secure electrical connection. This part number NS-243 is a practical choice when restoring the starting interlock function on a Chevrolet Metro, Geo Metro, Pontiac Firefly, or Suzuki Swift.

This part cross-references 1S5080 and DR4047 for the same application.

Common Problems This Part Can Address

• Engine will not crank in Park or Neutral
• Intermittent starting caused by worn internal switch contacts
• Incorrect transmission range signal to the starting circuit
• Electrical switching faults related to a damaged neutral safety switch
• Hard-start complaints tied to selector-position sensing issues

Installation Notes and Tips

Verify the transmission selector position before removal and compare the connector style, terminal count, and mounting layout to the original part. After installation, confirm that the vehicle starts only in Park and Neutral and that the shift indicator and related starting functions operate correctly. For best results, inspect the connector and terminals for corrosion or heat damage before reconnecting.

Quality Assurance

Standard Ignition manufactures this NS-243 neutral safety switch with materials and testing practices focused on electrical conductivity, switching accuracy, and service reliability. Each unit is tested to confirm mechanical and electrical performance before release.