The Ford Elite front turn signal requires either a 1157NA or 1034NA bulb size, while the rear turn signal uses a 1157 bulb size. The replacement chart covers 1975 to 1976 vehicle 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.
All three bulb types specified for the Ford Elite, the 1157NA, 1034NA, and 1157, share the BAY15d bayonet base and operate at 12V with a dual-filament output of 21W/5W.
The BAY15d base is a double-contact bayonet fitting, which allows the socket to distinguish between the two filaments, supporting separate stop and tail or turn and parking functions within a single bulb.
The 1157NA and 1034NA carry the "NA" suffix, which denotes natural amber glass, meaning the amber color is built into the glass envelope rather than produced by a colored lens or housing.
The 1034NA is specified as a variant of the 1157, sharing the same voltage and wattage ratings, though it carries a distinct ANSI designation.
For the 1976 Ford Elite, the front turn signal takes a 1157NA while the rear takes a 1157, meaning the two positions are not interchangeable despite sharing the same base type, as the front position requires the natural amber glass variant.
For the 1975 Ford Elite, the rear turn signal uses the 1157, while the front uses the 1034NA, again separating the front and rear positions by glass tint even though the electrical specifications are identical.
All three bulb types conform to ANSI standards applicable in both the United States and Canada.