Toyota Corona front turn signal bulbs utilize P21W or 1157 bulb sizes, while rear turn signal bulbs use 1156 or 1157 sizes. The replacement chart covers 1969 through 1982 production years with corresponding bulb specifications.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Toyota Corona uses the 1157 bulb for the front turn signal across all listed model years, spanning 1969-1982.
The 1157 is a dual-filament bulb operating at 12V with a 21W/5W output and a BAY15d bayonet base, conforming to ANSI standards applicable in the US and Canada. The dual-filament design allows a single bulb to serve two lighting functions at different wattages.
The 1156 is a single-filament bulb operating at 12V with a 21W output and a BA15s bayonet base, also conforming to ANSI standards for the US and Canada.
The rear turn signal of the Toyota Corona uses the 1157 bulb for 1969-1972 model years, then transitions to the 1156 bulb for 1973-1982 model years.
The 1157 and 1156 bulbs share the same 12V operating voltage and the same 21W high-filament output, but they are not interchangeable. The 1157 uses a BAY15d base with offset pins to accommodate its dual-filament design, while the 1156 uses a BA15s base with a single contact. The physical base configurations differ and prevent cross-installation.
For 1969-1972 Corona model years, both the front and rear turn signals use the same 1157 bulb, meaning a single bulb type serves both positions during that period.
From 1973 onward, the front and rear turn signals require different bulb types, with the front retaining the dual-filament 1157 and the rear switching to the single-filament 1156.