Ford E-250 Map Light Bulb Size

The Ford E-250 map light bulb accommodates 3 distinct sizes: 578, 211-2, and 168, with each size corresponding to specific vehicle configurations. The replacement chart documents bulb specifications across the 1985 to 2014 production range.

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
1994-2003	211-2
1993	168
1992	211-2
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-250 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 operates at 12V with a 12W output under the ANSI standard.
The 211-2 is the second most common fitment, covering the Ford E-250 from 1992 through 2003, with the exception of 1993. Like the 578, it is a 41mm festoon bulb rated at 12V and 12W, but it uses an SV8.5 base rather than end-cap contacts.
Although the 578 and 211-2 share the same 41mm length and 12V/12W electrical rating, their contact types differ. The 578 uses end-cap contacts while the 211-2 uses an SV8.5 base, meaning the two are not directly interchangeable without confirming socket compatibility.
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 1156 bulb type.
The 105 carries a slightly higher wattage at 13W compared to the 12W rating of both the 578 and 211-2, a distinction relevant when assessing socket or circuit compatibility across model years.
The 1993 Ford E-250 is specified with the 168 bulb, a miniature wedge type in the T10 form factor rated at 12V and 4.9W. This is notably lower in wattage than all other bulb types listed in these specifications.
The 168 bulb used in the 1993 model year is not a festoon type and uses a wedge base, making it physically incompatible with the festoon sockets found in surrounding model years.
All four bulb types in these specifications conform to the ANSI standard and are designated for use in the US and Canadian markets.
The 1992 model year uses the 211-2, while the adjacent 1993 model year uses the 168 and the 1991 model year uses the 105, indicating that three different bulb types appear across just three consecutive years in the early 1990s portion of the Ford E-250 lineup.