The Ford Windstar brake light utilizes 3157 and 2458 bulb sizes according to the provided technical data. Information for the specified components covers a time range from 1995 through 2003.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Ford Windstar uses the 3157 bulb for its brake lights across the entire 1995-2003 model range, making it the most consistently specified bulb in these fitment records.
The 3157 is a dual-filament T25 wedge bulb rated at 12V with a 27W high filament and a 7W low filament, which allows it to serve both brake and running light functions within a single housing.
The center high mount stop light on the 2000-2003 Ford Windstar takes a 921 bulb, while the 1995-1999 model years use a 912 bulb instead.
Both the 921 and 912 are T15 wedge bulbs operating at 12V, and the 912 is formally classified as a variant of the 921, though the two are not identical in wattage.
The 921 is rated at 16W, whereas the 912 is rated at 12W, meaning the two bulbs draw different amounts of current despite sharing the same T15 wedge form factor.
Because the 912 and 921 differ in wattage, substituting one for the other in the center high mount stop light position may affect light output and could interfere with the vehicle's electrical load expectations for that circuit.
All three bulb types specified for the Windstar, the 3157, 921, and 912, conform to ANSI standards applicable in both the United States and Canada.
The 3157's dual-filament design is a technical distinction from the single-filament 921 and 912 bulbs, which are each dedicated to a single brightness level.