The Suzuki Swift turn signal utilizes a 1157 bulb size for the specific lighting component located on the exterior of the vehicle. Data provided for the bulb covers the range from 1995 to 2001.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The 1156 bulb is the most frequently specified type across the Suzuki Swift turn signal data, appearing as the front turn signal fitment for 1989-1996 model years and as the rear turn signal fitment for 1990-2001 model years.
The 1156 is a single-filament bulb rated at 12V and 21W, fitted with a BA15s bayonet base, and classified under the ANSI standard used in the United States and Canada.
The 1157 is a dual-filament bulb rated at 12V with filaments drawing 21W and 5W respectively, fitted with a BAY15d bayonet base, and also classified under the same ANSI standard.
The BA15s base of the 1156 and the BAY15d base of the 1157 are physically distinct and not interchangeable, as the BAY15d base features offset locating pins to prevent incorrect installation of a dual-filament bulb in a single-filament socket.
The Suzuki Swift front turn signal shifted from the 1156 to the 1157 between the 1996 and 1998 model years, representing a change from a single-filament to a dual-filament fitment at that position.
For the 1998-2001 Suzuki Swift, the front turn signal requires the 1157 while the rear turn signal requires the 1156, meaning the front and rear positions do not share the same bulb type during those years.
The rear turn signal of the 1989 Suzuki Swift is specified as the 1157, which differs from every other rear turn signal year in the data set, all of which use the 1156.
The dual-filament design of the 1157 allows a single bulb to serve two lighting functions simultaneously, with the higher 21W filament typically assigned to the turn signal function and the lower 5W filament to a parking or position light function.