The Sterling 827 front and rear turn signal bulbs both utilize a 1156 size bulb for replacement purposes. The replacement chart covers vehicle production spanning 1989 to 1991.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The 1156 is the sole bulb type listed across all turn signal positions for the Sterling 827, covering both the front and rear turn signal circuits for the 1989-1991 model years.
The 1156 is a single-filament bulb, meaning it serves a dedicated switching function rather than a dual-purpose role such as combined stop and turn signaling.
The 1156 operates at 12 volts and draws 21 watts, which places it within the standard range for incandescent automotive turn signal applications.
The 1156 uses a BA15s bayonet base, a single-contact fitting that is not interchangeable with the BA15d double-contact base found on dual-filament bulbs such as the 1157.
The 1156 carries ANSI standardization, indicating its electrical and physical specifications conform to a defined North American standard applicable in both the United States and Canada.
Because the front and rear turn signal positions share the same bulb type, a single 1156 bulb serves as a direct replacement across all four turn signal sockets on the Sterling 827 for the 1989-1991 model years.