Oldsmobile Cutlass Calais License Plate Bulb Size

Additional Notes

• The 194 bulb is the sole license plate bulb size listed across all model years of the Oldsmobile Cutlass Calais covered in these specifications.
• The 194 is an ANSI-standardized bulb type recognized in both the United States and Canada, meaning it conforms to a defined set of electrical and physical parameters shared across manufacturers.
• It belongs to the T10 miniature wedge form factor, a designation that describes its tubular glass envelope and wedge-style base, which seats directly into a socket without a separate metal base or pins.
• The bulb operates at 12 volts, consistent with the standard electrical system voltage found in passenger vehicles of this era.
• Its rated wattage of 3.78W places it in the low-draw category, typical of license plate and courtesy lighting applications where prolonged illumination is expected without significant electrical load.
• The Oldsmobile Cutlass Calais used the 194 bulb for license plate lighting across the 1978-1984 and 1988-1991 model years as recorded in these specifications.
• Because the T10 wedge base is a widely adopted standard, the 194 bulb is physically interchangeable with other T10-based bulbs, though substitutions with different wattage ratings may affect socket compatibility or circuit behavior.
• The wedge base design eliminates the need for a bayonet or screw-type socket, which reduces the risk of corrosion-related fitment issues common in exterior lighting positions such as license plate housings.