Ford LTD front turn signal bulbs utilize 1034NA, 1157NA, or 1156 bulb sizes, while rear turn signal bulbs use 1157 or 1156 bulb sizes across multiple generations. The replacement chart covers vehicle production spanning 1965 to 1986 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.