Ford E-150 Map Light Bulb Size

The Ford E-150 map light bulb size chart specifies 3 distinct bulb sizes: 578, 211-2, and 168 for this vehicle model. The replacement chart covers data spanning from 1985 to 2014 across multiple production years.

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
2004-2014	578
1993-2003	211-2
1992	168
1985-1991	105

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Festoon bulb, 41mm length, end-cap contacts. 12V, 12W.	578
ANSI standard (US & Canada). Festoon bulb, 41mm length, SV8.5 base. 12V, 12W.	211-2
ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 4.9W.	168
ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. Variant of 1156. 12V, 13W.	105

Other Locations

Additional Notes

The Ford E-150 map light specifications cover model years 1985 through 2014, with four distinct bulb types used across that span: the 578, 211-2, 168, and 105.
The 578 is the most frequently specified bulb in these records, appearing across the 2004-2014 model years. It is a festoon-type bulb with a 41mm length, end-cap contacts, and an ANSI-standard 12V, 12W rating.
The 211-2 is the second most common bulb in these specifications, covering the 1993-2003 model years. It shares the same 41mm festoon form factor and 12V, 12W rating as the 578 but uses an SV8.5 base rather than end-cap contacts.
Although the 578 and 211-2 share identical voltage, wattage, and physical length, their contact types differ. The end-cap design of the 578 and the SV8.5 base of the 211-2 are not interchangeable, as the socket in the vehicle is designed for one specific contact style.
The 1992 Ford E-150 uses the 168, a T10 miniature wedge bulb rated at 12V and 4.9W. This is a significantly lower wattage than the festoon bulbs used in surrounding model years, indicating a different map light assembly for that year.
The 105 bulb is specified for the 1985-1991 model years. It is a single-filament bulb with a BA15s bayonet base, rated at 12V and 13W, and is noted as a variant of the more widely known 1156 bulb type.
The BA15s bayonet base of the 105 bulb is mechanically distinct from the wedge, festoon end-cap, and SV8.5 base types used in later E-150 model years, making cross-year substitution incompatible without a socket adapter.
All four bulb types in these specifications conform to ANSI standards applicable in both the United States and Canada.