Nissan Van front side marker bulbs use 194 size while rear side marker bulbs use 158 size. The replacement chart covers 1987 to 1988 vehicle production years with corresponding bulb specifications.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Nissan Van uses the 194 bulb for the front side marker position across the 1987-1988 model years.
The 194 is an ANSI-standardized miniature wedge bulb rated at 12V and 3.78W, fitting the T10 wedge base.
The rear side marker position on the 1987-1988 Nissan Van takes the 158 bulb.
The 158 is also an ANSI-standardized T10 miniature wedge bulb, rated at 12V and 3W, making it slightly lower in wattage than the 194 used at the front.
Both the 194 and 158 share the same T10 wedge base format, though their wattage ratings differ, which means they are not interchangeable without accounting for that difference.
The T10 wedge base is a common automotive format in which the bulb's glass envelope itself acts as the contact point, requiring no separate metal base or pins.
Both bulbs conform to ANSI standards applicable in the United States and Canada, indicating standardized electrical and physical tolerances across manufacturers.