Ford Granada front turn signal bulbs utilize 1157, 1157NA, or 1034NA sizes, while rear turn signal bulbs use 1157 or 1156 sizes. The replacement chart covers 1975 through 1982 production years with corresponding bulb size specifications.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Ford Granada turn signal specifications cover model years 1975-1982, spanning both front and rear positions across eight years of production.
The 1157 bulb is the most frequently specified type in these listings, appearing in the front turn signal position for 1979-1982 and the rear turn signal position for 1981-1982.
The 1157 is a dual-filament bulb rated at 12V with a 21W high filament and a 5W low filament, mounted on a BAY15d bayonet base, which allows it to serve both turn signal and parking light functions from a single housing.
The 1157NA and 1034NA variants share the same BAY15d base and 12V, 21W/5W electrical ratings as the standard 1157, but feature natural amber glass rather than a clear envelope, producing an amber output without relying on a colored lens.
The 1034NA is noted as a variant of the 1157 and was specified for the Ford Granada front turn signal in 1976-1977, making it the only position in these specifications where that bulb type was used.
The 1156 is a single-filament bulb rated at 12V and 21W, fitted with a BA15s bayonet base. Unlike the dual-filament types, it serves only one switched function per socket.
The BA15s base of the 1156 and the BAY15d base of the 1157 family are physically distinct. The BAY15d base has offset pins to prevent incorrect installation, while the BA15s base has symmetrical pins, meaning these two bulb families are not interchangeable despite their similar appearance.
The rear turn signal position on the Ford Granada used the 1156 single-filament bulb from 1975-1980, then transitioned to the dual-filament 1157 for 1981-1982, representing a change in base type between those model year groups.
All four bulb types listed, the 1157, 1157NA, 1034NA, and 1156, conform to ANSI standards recognized in both the United States and Canada.
The front turn signal position used natural amber glass bulbs (1157NA or 1034NA) for 1975, 1977, and 1978, while the clear 1157 was specified for 1979-1982, indicating a difference in lens or housing design across those year groups.