Ford Maverick Parking Light Bulb Size

Additional Notes

• The 1157 bulb is the most frequently specified parking light bulb for the Ford Maverick, appearing across the 1970-1973 and 1976-1977 model years.
• 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, conforming to ANSI standards recognized in both the United States and Canada.
• The BAY15d bayonet base uses two offset pins to ensure correct orientation during installation, a design that prevents the filaments from being wired in reverse.
• The dual-filament construction of the 1157 allows a single bulb to serve two lighting functions simultaneously, such as parking and turn signal duties, within one housing.
• The 1975 Ford Maverick uses the 1157NA, which shares the same BAY15d base, 12V rating, and 21W/5W filament configuration as the standard 1157 but is distinguished by natural amber-tinted glass rather than clear glass.
• The natural amber glass of the 1157NA produces an amber output without relying on a colored lens, meaning the amber effect is built into the bulb itself.
• The 1974 Ford Maverick uses the 1034NA, which is described as a variant of the 1157 and carries the same BAY15d base, 12V operating voltage, and 21W/5W filament ratings, also with natural amber glass.
• Because the 1034NA is a variant of the 1157 rather than an identical replacement, substitution between these part numbers warrants attention to whether the amber tint is required by the original fitment.
• All three bulb types across the full 1970-1977 model range share the BAY15d bayonet base, indicating physical base compatibility across these years, though the amber glass variants are not interchangeable with clear versions where tinted output is specified.