Standard Ignition NS-258 Neutral Safety Switch

Neutral Safety Switch for 2005 Acura NSX

Standard Ignition NS-258 is a 12V neutral safety switch built with a screw-in attachment method, a 2-pin male terminal layout, and a single rectangular female connector. It is a direct-fit electrical replacement for the 2005 Acura NSX and is identified by part number NS-258.

Key Features

• Fits 2005 Acura NSX
• Standard Ignition NS-258 neutral safety switch
• 12V electrical component for automatic transmission start-interlock circuits
• Screw-in attachment method for secure mounting
• 2 terminal pins with 1 rectangular female connector
• Plastic body with black and gray finish
• Wiring harness length: 12.375 in. (314.325 mm)
• Length: 4 in. (101.6 mm)

Detailed Description

Standard Ignition NS-258 is a neutral safety switch designed for the 2005 Acura NSX. This switch helps control starter engagement based on transmission position, using a 2-wire, 12V configuration with male pins and a rectangular female connector. The screw-in design and compact plastic housing support a clean OE-style electrical replacement where the original switch has worn, failed, or become inconsistent. If you are searching for a 2005 Acura NSX neutral safety switch replacement, NS-258 is the part number to reference.

This part cross-references 35620PR8003 and JA4443 for the same application. The NS-258 part number is also useful when verifying interchange listings during diagnosis or ordering.

What It Is Used For

• No-crank condition when the transmission is not being recognized in Park or Neutral
• Intermittent starter engagement caused by a worn switch
• Transmission range signal issues tied to the start-interlock circuit
• Electrical connection problems at the neutral safety switch connector
• Replacement of a damaged or aging switch on a 2005 Acura NSX

Installation Notes and Tips

Confirm the connector shape, terminal count, and screw-in mounting style before installation. Inspect the harness connector for corrosion, bent pins, or damaged locking tabs, and verify the transmission is in the correct position during diagnosis. Because mounting hardware and gaskets are not listed, reuse only serviceable existing components as applicable. Always compare the original unit to NS-258 before final installation on the Acura NSX.

Quality Assurance

Standard Ignition supplies electrical replacement parts for vehicle repair applications, and NS-258 is built to match the listed fitment and connector specifications for the 2005 Acura NSX.