Keep your engine cranking only in Park or Neutral and your reverse lamps lighting the moment you shift into reverse with the Standard Ignition Back Up Light Switch / Neutral Safety Switch NS-41. This combination switch drops in as a direct-fit replacement across a wide range of GM cars and trucks, including the 1978-1984 Buick Century, 1980-1996 Chevrolet Caprice, 1988-1994 Chevrolet C1500, 1982-1990 Chevrolet S10 and 1981-1992 GMC Jimmy — see the Buyer's Guide tab for the full 115-application list.
Interchange: S9168 · 89010 · DR403 · NS6497 · 15679679 · 15679680 · 15685960 · 15705308 · 22509632 · 22514861. Manufacturer part number NS-41 (also NS41).
Listed under both names — Back Up Light Switch and Neutral Safety Switch — because this single unit performs both jobs.
This part cross-references / interchanges with the following part numbers:
What does the NS-41 switch do?
It is a combination switch: as the neutral safety (park/neutral position) switch it is designed to let the starter engage only in Park or Neutral, and as the back-up light switch it activates the reverse lamps when you shift into reverse.
What vehicles does this switch fit?
It is a direct-fit replacement for 115 GM applications, such as the 1978-1984 Buick Century, 1980-1996 Chevrolet Caprice, 1988-1994 Chevrolet C1500 and 1982-1990 Chevrolet S10. Check the Buyer's Guide tab for the complete list.
What are the signs this switch may need replacing?
Signs that may point to this switch include an engine that cranks in gear or won't crank in Park or Neutral, or reverse lights that don't come on. Diagnose the cause first, since other components can produce the same symptoms.
What part numbers does the NS-41 interchange with?
It cross-references S9168, 89010, DR403, NS6497, 15679679, 15679680, 15685960, 15705308, 22509632 and 22514861. The manufacturer part number is NS-41.
Why is it listed as both a Back Up Light Switch and a Neutral Safety Switch?
Because this single NS-41 unit performs both functions, it is cataloged under both names — controlling the safe-start circuit and the reverse lamp circuit.
WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
