Maserati 430i Dome Light Bulb Size

The Maserati 430i dome light requires a 194 bulb size for the interior lighting system. Data for the specific component covers the period from 1989 through 1990.

The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.

Bulb Size by Year Range

Years	Bulb Size
1989-1990	194

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 3.78W.	194

Other Locations

Additional Notes

The 194 bulb is the sole dome light bulb size listed for the Maserati 430i across the 1989-1990 model years.
The 194 bulb follows the ANSI standard, meaning it conforms to a specification recognized across the United States and Canada.
It belongs to the T10 form factor, a miniature wedge-base design that seats without a separate locking mechanism, relying instead on the tension of its wedge-shaped base within the socket.
The bulb operates at 12 volts, consistent with the standard electrical system voltage found in passenger vehicles of that era.
At 3.78 watts, the 194 is a low-wattage lamp, a characteristic typical of interior courtesy and dome lighting applications where prolonged use and minimal heat output are priorities.
The T10 designation refers to the bulb's tubular envelope, with the numeral indicating a width of 10 eighths of an inch, a sizing convention used in the ANSI miniature bulb classification system.
The wedge base of the 194 bulb is a direct-fit design, meaning the electrical contacts are formed by the glass envelope's pinched base rather than by separate metal pins or a bayonet cap.