Standard Motor Products NS85 Tru-Tech Neutral Safety Switch

The Standard Motor Products NS85 Tru-Tech Neutral Safety Switch is a critical safety component designed for automatic transmission vehicles. This switch prevents the engine from starting unless the transmission is in Park or Neutral position, protecting against dangerous unintended vehicle movement during startup.

Key Features:

• OE replacement design for direct fitment
• Dual-function switch controls both neutral safety and backup light circuits
• Precision-engineered to detect transmission gear position accurately
• Manufactured by Standard Motor Products, an established brand since 1919
• Tru-Tech series quality for reliable performance

How It Works:

The switch receives constant power when the key is in the on position and only allows current to flow to the starter motor when the transmission is in Park or Neutral. Many neutral safety switches also control the backup lights when the transmission is shifted into Reverse, providing dual functionality in a single component.

Application:

This neutral safety switch is commonly found mounted on the transmission housing or connected to the shift linkage on automatic transmission vehicles. Compatible with various GM vehicles from the 1990s and 2000s including Chevrolet, GMC, Cadillac, and Oldsmobile models. Cross-references include GM 24229422, Isuzu 8124500160, and BWD S9171.

Essential for safe vehicle operation, this switch ensures your engine can only start when the transmission is in a safe position, preventing unexpected vehicle movement and potential accidents.