Toyota Crown Tail Light Bulb Size

The Toyota Crown tail light requires a 1157 bulb size for proper installation and function within the rear lighting assembly. Data for 1157 bulb requirements covers the 1969 to 1972 range.

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
1969-1972	1157

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Dual-filament bulb with BAY15d bayonet base. 12V, 21W/5W.	1157

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Additional Notes

The 1157 is the sole bulb type listed across all tail light positions for the Toyota Crown spanning 1969-1972.
The 1157 operates on a 12-volt system and carries a dual-wattage rating of 21W and 5W, corresponding to its two filaments. The higher-wattage filament serves the brake or turn signal function, while the lower-wattage filament serves the running light function.
The dual-filament design of the 1157 allows a single bulb to perform two lighting functions within one housing, which is a common arrangement in tail light assemblies of that era.
The 1157 uses a BAY15d bayonet base, a two-pin offset base type. The offset pin positioning is a deliberate fitment control, as it prevents incorrect single-filament bulbs with similar bayonet bases from being seated in the socket.
The 1157 carries ANSI standardization applicable to the United States and Canada, meaning the bulb conforms to a defined set of electrical and physical specifications recognized across those markets.
Because the BAY15d base relies on offset pins for correct orientation, substituting a bulb with a non-offset or differently spaced base would result in an incompatible fit even if the outer profile appeared similar.