The Nissan B110 front turn signal requires a 1157 bulb size while the rear turn signal uses a 1156 bulb size. The replacement chart covers 1970 to 1973 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.
The Nissan B110 uses two distinct bulb types across its turn signal system: the 1157 at the front and the 1156 at the rear, across all model years from 1970-1973.
The 1157 is a dual-filament bulb, meaning it carries two separate filaments within a single envelope, allowing it to serve two lighting functions at different wattages.
The 1157 operates on a 12V circuit and draws 21W on its primary filament and 5W on its secondary filament, with a BAY15d bayonet base.
The 1156 is a single-filament bulb rated at 12V and 21W, fitted with a BA15s bayonet base.
Both the 1157 and 1156 are ANSI-standardized bulb types recognized in the United States and Canada.
The BAY15d base of the 1157 and the BA15s base of the 1156 are not interchangeable. The BAY15d features offset locating pins to prevent incorrect installation of a single-filament bulb in a dual-filament socket.
Because the 1157 and 1156 share a similar physical profile but differ in base pin configuration and filament count, substituting one for the other in the Nissan B110 would result in an improper fit or incorrect circuit behavior.