Toyota Celica Trunk Bulb Size

Additional Notes

• The Toyota Celica trunk bulb specifications span model years 1982-2002 and reference three distinct bulb types: DE3022, 194, and 168. All three are ANSI-standardized bulbs used in the US and Canadian markets.
• The DE3022 is a festoon-type bulb with a 31mm length and end-cap contacts, operating at 12 volts. Its physical format differs fundamentally from wedge-type bulbs, meaning it is not interchangeable with the 194 or 168 even when voltage ratings match.
• The 194 and 168 are both miniature wedge bulbs sharing the T10 form factor and 12-volt operating voltage. Despite their physical compatibility, they carry different wattage ratings: the 194 draws 3.78W while the 168 draws 4.9W.
• Because the 194 and 168 share the T10 wedge base, one can physically seat in a socket designed for the other. However, the wattage difference means the two are not electrically equivalent, and substituting one for the other may affect circuit load.
• The Toyota Celica (1982-1986) uses the 168 bulb for trunk illumination, making it the only generation in these specifications to require that wattage rating.
• The 194 bulb appears across the widest range of years in these specifications, covering 1987-1988, 1990-1994, and 1997-1999, reflecting its broad application across multiple Celica generations.
• The DE3022 festoon bulb is specified for 1989, 1995-1996, and 2000-2002. Its end-cap contact design requires a socket with opposing contact points at each end, which is structurally distinct from a wedge-type socket.
• The year 1989 is notable in that it sits between two stretches where the 194 wedge bulb is specified, yet it alone calls for the DE3022 festoon type, indicating a socket configuration specific to that model year's trunk lamp assembly.