Standard Ignition NS-140 Neutral Safety Switch

Reliable Neutral Safety Switch for Infiniti, Nissan, and Mercury Vehicles

The Standard Ignition NS-140 Neutral Safety Switch is designed to ensure safe and accurate transmission operation for select Infiniti, Nissan, and Mercury models. Engineered with durable materials and precise connectors, this switch supports proper vehicle starting and shifting functions.

• Compatible with Infiniti Altima, Nissan Maxima, I30, Quest, and Mercury Villager
• 12-volt electrical system support
• Six male blade terminals and two female rectangular connectors
• Durable metal construction with aluminum and plastic finish
• Bolt mount attachment method for secure installation
• Wiring harness length of 12.25 inches (311.15 mm)
• Overall length of 5.1875 inches (131.76 mm)
• Includes nine wires with blade and pin terminal types

Product Details and Specifications

The NS-140 Neutral Safety Switch from Standard Ignition is built with a combination of metal, aluminum, and plastic materials to provide reliable performance and longevity. It features six male blade terminals paired with two female rectangular connectors, ensuring a secure and precise electrical connection. The switch mounts via bolts, providing a stable fitment in the vehicle’s transmission system. With a wiring harness length of 12.25 inches, it offers sufficient reach for installation without excess slack. The black and silver finish complements the vehicle’s engine bay components while resisting corrosion.

Compatible Vehicles and Applications

This neutral safety switch is specifically compatible with several Infiniti, Nissan, and Mercury models, including the Infiniti Altima, Nissan Maxima, Nissan I30, Nissan Quest, and Mercury Villager. It is designed to replace faulty or worn switches that may cause issues with starting the vehicle or shifting gears safely.

• Prevents engine from starting in gear
• Ensures proper gear position detection
• Eliminates intermittent starting problems
• Resolves transmission shift lock issues
• Improves overall vehicle safety during startup

Installation Notes and Tips

Installation of the Standard Ignition NS-140 neutral safety switch requires basic mechanical skills and tools. The bolt mount design allows for straightforward replacement. Ensure the vehicle is turned off and the battery disconnected before beginning installation. Verify the connector genders and terminal types match the vehicle’s wiring harness to avoid connection errors. Proper alignment during mounting is critical for accurate switch operation.

Quality Assurance and Warranty

Standard Ignition parts are manufactured to meet or exceed OEM specifications, providing dependable performance for your vehicle. While mounting hardware and gaskets are not included with this part, the NS-140 is constructed from quality materials to ensure durability. Please consult the product documentation or manufacturer for warranty details applicable to this neutral safety switch.