The Suzuki Forenza turn signal utilizes a 1156 bulb size for the front and rear lighting components. Data for the specific bulb requirements covers the range from 2004 to 2008.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Suzuki Forenza uses two distinct bulb types across its turn signal positions: the 2357NA for the front and the 1156NA for the rear, across all 2004-2008 model years.
The 2357NA is a dual-filament bulb, meaning it carries two separate filaments within a single envelope, allowing it to serve more than one lighting function at a given position.
The 1156NA is a single-filament bulb, operating at 12V with a rated output of 21W, and is dedicated to a single lighting function at the rear turn signal position.
Both bulb types use a bayonet-style base, though they are not interchangeable. The 2357NA uses a BAY15d base, which has two offset pins, while the 1156NA uses a BA15s base, which has a single pin.
The physical base difference between the BAY15d and BA15s fittings prevents accidental cross-installation between the front and rear positions.
The 2357NA operates at 12V with a dual-wattage rating of 26.9W and 8W, corresponding to its two filaments, each drawing a different level of power depending on the active function.
Both the 2357NA and 1156NA feature natural amber glass, which produces the amber color required for turn signal use without relying on a colored lens or coating.
Both bulb types conform to ANSI standards recognized in the United States and Canada, indicating standardized electrical and physical specifications across manufacturers.