Ford Anglia Brake Bulb Size

Additional Notes

• The Ford Anglia brake bulb specifications span 1950-1967, with two distinct bulb types used across that period: the 1158 for 1950-1958 and the 1034 for 1959-1967.
• Both the 1034 and 1158 are ANSI-standardized bulb types recognized in the United States and Canada, and both use a dual-filament design with a BAY15d bayonet base.
• A dual-filament bulb contains two separate wire filaments within a single envelope, allowing it to serve two brightness levels from one unit, which is typical for brake and tail light functions.
• The BAY15d bayonet base features two offset pins that lock the bulb into its socket with a push-and-twist motion, with the offset pin placement preventing incorrect installation orientation.
• The 1034 bulb operates at 12 volts with a wattage rating of 21/5W, where the higher wattage filament corresponds to the brake function and the lower to the tail light function.
• The 1034 is described as a variant of the 1157, a widely used automotive bulb type, meaning the two share closely related electrical and physical characteristics under the BAY15d base standard.
• Although the 1034 and 1158 share the same BAY15d base type, they are distinct ANSI part numbers, and substitution between them without confirming wattage compatibility with the Ford Anglia (Ford Anglia) socket and wiring is not indicated as interchangeable by these specifications.
• The 1158 specifications do not include a wattage rating, distinguishing it from the 1034 in the level of electrical detail provided by the ANSI designation data used here.