Plymouth Caravelle Dome Light Bulb Size

The Plymouth Caravelle dome light requires bulb size 912, 906, or 211-2 depending on the specific version. Data for the bulb size covers the range from 1985 to 1988.

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
1988	912
1986-1987	906
1985	211-2

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Wedge bulb (T15). Variant of 921. 12V, 12W.	912
ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 8W.	906
ANSI standard (US & Canada). Festoon bulb, 41mm length, SV8.5 base. 12V, 12W.	211-2

Other Locations

Additional Notes

The Plymouth Caravelle dome light draws from three distinct bulb types across its 1985-1988 model years: the 912, 906, and 211-2.
All three bulb types conform to ANSI standards recognized in both the United States and Canada.
The 906 bulb is a T10 miniature wedge type rated at 12V and 8W, and it fits the 1986-1987 Caravelle dome light.
The wedge base on the 906 is a self-retaining design that seats directly into a matching socket without a separate locking mechanism.
The 1988 Caravelle uses the 912 bulb, a T15 wedge type rated at 12V and 12W, making it a higher-wattage unit than the 906 used in the two preceding years.
The 912 is a variant of the 921 bulb, meaning the two share the same T15 wedge form factor and voltage rating, though wattage differences between variants can affect suitability depending on socket design.
The 1985 Caravelle uses the 211-2, a festoon bulb with an SV8.5 base and a 41mm length, rated at 12V and 12W.
A festoon bulb is cylindrical in form and mounts by pressing its end caps into spring clips within the fixture, a fitment method that is physically incompatible with wedge-style sockets.
Because the 1985 model uses a festoon-type socket and the 1986-1988 models use wedge-type sockets, bulbs from these year groups are not interchangeable with one another.
Within the 1986-1988 range, the socket change from T10 to T15 between the 906 and 912 also means those two bulbs are not direct substitutes for each other.