Nissan 810 front turn signal bulbs measure 1157 in size, while rear turn signal bulbs measure 1156, with each bulb type serving distinct lighting functions on the vehicle. The replacement chart covers 1977 through 1981 production years and details bulb size specifications for turn signal applications.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Nissan 810 uses two distinct bulb types across its turn signal positions: the 1157 at the front and the 1156 at the rear, a split that holds consistent across the 1977-1981 model years.
The 1157 is a dual-filament bulb, meaning it carries two separate filaments within a single envelope, rated at 21W and 5W respectively on a 12V circuit.
The 1157 uses a BAY15d bayonet base, a two-pin offset base design that physically prevents incorrect single-filament bulbs from being seated in its socket.
The 1156 is a single-filament bulb rated at 21W on a 12V circuit, drawing the same wattage as the higher of the two filaments in the 1157.
The 1156 uses a BA15s bayonet base, a single-pin design that is not interchangeable with the BAY15d base of the 1157 despite the two types sharing a similar overall form.
Both the 1157 and 1156 are ANSI-standardized bulbs recognized across the United States and Canada, placing them within a widely distributed specification category.
Because the front sockets on the Nissan 810 are wired to utilize both filaments of the 1157, substituting a single-filament 1156 in a front position would result in the loss of one electrical function at that lamp.