Standard Ignition NS-487 Neutral Safety Switch

Neutral Safety Switch for BMW Applications

Standard Ignition NS-487 is a 12V neutral safety switch built with a metal body, plastic and metal finish components, and a single round female connector. It uses a bolt-mount attachment and a 5-terminal, 5-wire layout with bullet-style terminals for direct transmission-range signal control.

Compatible With select BMW Z4, 525i, 530i, 325Ci, 325i, 325xi, 330Ci, 330i, 330xi, Z3, 323Ci, 323i, and 328i applications. Standard Ignition NS-487 is a direct-fit neutral safety switch for BMW automatic transmission starting and gear-position circuit service.

• 12V neutral safety switch for transmission start-in-park and start-in-neutral circuits
• 5-terminal, 5-wire design with male bullet terminals
• Single round female connector for vehicle harness connection
• Bolt-mount installation with metal construction
• Black and silver finish with metal and plastic components
• Cross-references Monroe Shocks & Struts 24101423378 and NS6705 for the same application

Fitment Details

• Fits 2003-2005 BMW Z4, N/A
• Fits 2003-2004 BMW 525i, N/A
• Fits 2001-2004 BMW 530i, N/A
• Fits 2001-2003 BMW 325Ci, N/A
• Fits 2003 BMW 325i, N/A, to 3/03
• Fits 2003 BMW 325xi, N/A, to 3/03
• Fits 2001-2003 BMW 330Ci, N/A
• Fits 2001-2003 BMW 330i, N/A
• Fits 2001-2003 BMW 330xi, N/A
• Fits 2001-2002 BMW 325i, N/A
• Fits 2002 BMW 525i, N/A, w/ Touring Package
• Fits 1996-2002 BMW Z3, N/A
• Fits 2001 BMW 325xi, N/A
• Fits 2001 BMW 525i, N/A, not compatible with vehicles equipped with Auto Headlights
• Fits 2000 BMW 323Ci, N/A
• Fits 2000 BMW 323i, N/A
• Fits 2000 BMW 328i, N/A, from 3/00

Common Replacement Symptoms

• No-crank condition when the shifter is in Park or Neutral
• Intermittent starting after shifting into Park
• Gear-position signal faults affecting transmission start logic
• Reverse or range-switch related electrical issues tied to the selector assembly
• Starting circuit problems on BMW automatic transmission vehicles

Installation Notes

Verify connector style, terminal count, and transmission application before installation. This NS-487 uses a bolt-mount design and a 16.5-inch wiring harness, so routing and connector alignment should be checked against the original part. Confirm vehicle-specific notes, including the 2001 BMW 525i auto-headlight exclusion and the 2002 BMW 525i Touring Package application.

Quality Assurance

Standard Ignition NS-487 is built to match the electrical and mounting requirements of the listed BMW applications. Use the OE-style interchange reference and fitment notes to confirm the correct neutral safety switch before replacement.