Standard Ignition NS-116 Neutral Safety Switch

Neutral Safety Switch for GM Applications

The Standard Ignition NS-116 neutral safety switch is built for dependable starter circuit control in GM vehicles. It is a direct-fit electrical switch for applications such as the 1996-1999 Cadillac DeVille, 1997-1999 Cadillac Eldorado, 1996-1999 Cadillac Seville, and 1996-1999 Oldsmobile Aurora.

Key Features

• Neutral safety switch for automatic transmission start interlock operation
• Black housing with aluminum and plastic finish
• 2 female connectors
• 7 and 4 blade terminals with male terminal design
• Copper alloy conductors for strong electrical conductivity and reduced resistance
• 100% tested for mechanical and electrical switching performance
• Standard Ignition NS-116 replacement for service and repair work

Detailed Description

Standard Ignition NS-116 is engineered with a robust construction and high-grade materials to meet the demands of professional repair. The switch uses copper alloy conductors to maintain consistent electrical flow, while the tested switching design helps ensure the starter circuit only engages in the proper gear position. This makes it a practical choice for diagnosing or replacing a worn neutral safety switch on Cadillac DeVille, Cadillac Eldorado, Cadillac Seville, and Oldsmobile Aurora models.

This part cross-references 1S5039 and NS171 for the same application.

Common Issues It May Solve

• 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
• Reverse or park-start interlock faults caused by switch wear
• Electrical switching problems from damaged internal contacts

Installation Notes and Tips

Verify connector style, terminal layout, and transmission linkage alignment before installation. Confirm the vehicle is in the correct gear position during testing, and inspect the harness terminals for corrosion or looseness while servicing the switch. For best results, compare the original part number and connector configuration to the NS-116 before replacement.

Quality Assurance

Standard Ignition backs this neutral safety switch with a design focused on service-professional reliability. The part is fully tested for both mechanical action and electrical switching performance, supporting consistent operation in the starter interlock circuit.