Nissan Altima Trunk Bulb Size

Additional Notes

• The 158 is the sole trunk bulb size listed across all model years of the Nissan Altima covered in these specifications, spanning 1993-2023.
• The 158 bulb follows the ANSI standard recognized in the United States and Canada, classifying it as a regulated miniature lamp type with defined electrical and physical parameters.
• It belongs to the T10 wedge family, a form factor characterized by a tapering plastic base that friction-fits directly into a matching socket without a separate locking mechanism or bayonet pins.
• The bulb operates at 12 volts, which corresponds to the standard electrical system voltage found in conventional passenger vehicles.
• At a rated output of 3 watts, the 158 draws relatively low current, a figure consistent with interior courtesy and cargo area lighting applications where sustained illumination at low power is typical.
• Because the T10 wedge base is a widely shared form factor, physically similar bulbs from other ANSI designations may fit the socket of the Nissan Altima (1993-2023) without being electrically equivalent to the specified 158, making voltage and wattage verification relevant before substitution.