Ford Edge Dome Light Bulb Size

The Ford Edge dome light requires a 578 bulb size for proper installation and illumination within the interior cabin area. Data provided covers the period from 2007 through 2015 for the specified vehicle components.

The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.

Bulb Size by Year Range

Years	Bulb Size
2007-2015	578

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Festoon bulb, 41mm length, end-cap contacts. 12V, 12W.	578

Other Locations

Additional Notes

The 578 bulb is the sole dome light bulb size listed for the Ford Edge across the 2007-2015 model years.
The 578 is a festoon-type bulb, meaning it is cylindrical in shape and makes electrical contact through metal caps at each end rather than through a base socket.
Festoon bulbs are held in place by spring-loaded clips that press against the end caps, a mounting method common in interior dome and map light applications.
The 578 has a nominal length of 41mm, which is a critical fitment factor, as festoon bulbs of different lengths are not interchangeable even when voltage and wattage ratings match.
The bulb operates at 12 volts and draws 12 watts, figures consistent with standard automotive interior lighting powered directly from a vehicle's 12V electrical system.
The 578 conforms to ANSI standards recognized in both the United States and Canada, indicating a standardized specification rather than a proprietary or region-specific part.
Because the 578 is an ANSI-standardized festoon bulb, equivalent units from different manufacturers are generally interchangeable provided the 41mm length and 12V/12W ratings are matched.