The Nissan 1200 front turn signal requires a 1157 bulb size while the rear turn signal uses a 1156 bulb size. The replacement chart covers 1971 to 1973 model 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 1200 uses the 1157 bulb for the front turn signal across the 1971-1973 model years.
The 1157 is a dual-filament bulb, meaning it serves two lighting functions within a single housing, operating at 21W on the primary filament and 5W on the secondary filament.
The 1157 uses a BAY15d bayonet base, which features two offset pins at different heights to prevent incorrect installation of the bulb.
The rear turn signal on the Nissan 1200 uses the 1156 bulb across the 1971-1973 model years.
The 1156 is a single-filament bulb rated at 21W, dedicated solely to one lighting function rather than sharing a housing with a secondary circuit.
The 1156 uses a BA15s bayonet base, which has a single pin and is not interchangeable with the BAY15d base of the 1157 despite the two bulbs sharing a similar physical profile.
Both the 1157 and 1156 operate on a 12V electrical system and conform to ANSI standards applicable in the United States and Canada.
The difference in base type between the front 1157 and the rear 1156 means the two bulbs are not interchangeable between positions, even though their wattage on the primary filament is identical at 21W.