Toyota Celica Courtesy Bulb Size

The Toyota Celica courtesy light uses bulb sizes 194 and DE3022 according to the provided technical specifications for the lighting system. Available information covers the specific range from 1982 through 1999.

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
1994-1999	194
1982-1992	DE3022

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 3.78W.	194
ANSI standard (US & Canada). Festoon bulb, 31mm length, end-cap contacts. 12V.	DE3022

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Additional Notes

The Toyota Celica courtesy bulb specifications cover model years 1982-1999, with two distinct bulb types used across that span: the 194 and the DE3022.
The 194 bulb is an ANSI-standard miniature wedge type, designated T10, rated at 12 volts and 3.78 watts. Its wedge base means it is held in place by the socket itself rather than by a separate locking mechanism.
The DE3022 is an ANSI-standard festoon bulb with a 31mm length and end-cap contacts. Festoon bulbs make electrical contact at both ends of the tube and are physically distinct from wedge-base types.
Both bulb types operate on a 12-volt system, which is consistent with standard automotive electrical architecture.
The 194 (T10 wedge) is specified for the Toyota Celica courtesy light in model years 1994-1999.
The DE3022 festoon bulb is specified for model years 1982-1992, representing the longer of the two fitment periods covered in these specifications.
The two bulb types are not interchangeable. The 194 uses a wedge base while the DE3022 uses end-cap contacts, meaning the socket design differs between the two production periods.
No courtesy bulb specification is listed for the 1993 model year, so no bulb size is attributed to that year within these specifications.