Mercury Meteor front and rear turn signal bulbs utilize 1157NA and 1034 sizes for front applications, with 1157 and 1034 sizes for rear positions. The replacement chart covers 1961 through 1963 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 Mercury Meteor turn signal specifications cover model years 1961-1963, spanning both front and rear positions across three distinct bulb types: 1157NA, 1034, and 1157.
All three bulb types referenced in these specifications share the BAY15d bayonet base, a dual-pin offset base design that physically prevents incorrect insertion orientation.
All three bulb types operate at 12 volts with a dual-filament output of 21W and 5W, where the higher wattage filament serves the active turn signal function and the lower wattage filament serves a parking or running light function.
The 1157NA is a variant of the standard 1157 distinguished by its natural amber glass envelope, which produces an amber signal output without relying on a colored lens.
The 1034 is also a variant of the 1157, sharing the same BAY15d base and 12V/21W/5W electrical ratings, though it carries a separate ANSI designation.
Because the 1034 and 1157 share the same base type and wattage ratings, their physical and electrical compatibility is closely related, though they remain distinct ANSI-designated parts.
The Mercury Meteor (1962) uses a 1034 bulb at the front turn signal position, while the 1961 and 1963 model years use the 1157NA at that same position.
The rear turn signal of the Mercury Meteor uses the 1157 for 1962-1963, while the 1961 model year uses the 1034 at the rear position instead.
The 1157NA front fitment for 1961 and 1963 means those model years produce amber turn signals at the front through the bulb glass itself, a detail relevant when the lens is clear or white.
All bulb types in these specifications conform to ANSI standards applicable in both the United States and Canada.