Ford F-150 Luggage Compartment Bulb Size

Additional Notes

• The 912 bulb is the most frequently specified size across the Ford F-150 luggage compartment fitment data, appearing across the widest span of model years in the dataset.
• The 912 is an ANSI-standard T15 wedge bulb rated at 12V and 12W, and it is classified as a variant of the 921 bulb, which shares the same T15 wedge form but draws more current at 16W.
• For the 2015-2019 F-150, the 912 bulb size is specified only for vehicles equipped with Halogen Capsule Headlamps, indicating that headlamp configuration is a determining factor in luggage compartment bulb fitment for those model years.
• The 921 bulb, also a T15 wedge type at 12V and 16W, was the specified size for the 2004-2008 F-150, making it the sole bulb type used across that five-year span.
• Although the 912 and 921 share the same T15 wedge base and voltage rating, their wattage differs by 4W, which is a relevant consideration when evaluating interchangeability between the two types.
• The 922 bulb, specified for the 1995 F-150, carries the same T15 wedge form and 12V, 16W rating as the 921, though it holds a distinct ANSI designation.
• The 906 bulb, used on the 1994 and 1996 F-150, is a T10 miniature wedge type rated at 12V and 8W, making it physically smaller and lower in wattage than the T15 wedge bulbs used in surrounding model years.
• The 1156 bulb, specified for the 1975-1977 F-150, differs fundamentally from all other bulb types in the dataset by using a BA15s single-contact bayonet base rather than a wedge base, and it operates at a notably higher 21W output.
• The bayonet-base design of the 1156 means it is not physically interchangeable with any of the wedge-base bulbs listed elsewhere in the F-150 luggage compartment specifications.
• Across the full dataset, four distinct bulb bases are represented: the T15 wedge (912, 921, 922), the T10 miniature wedge (906), and the BA15s bayonet (1156), reflecting changes in socket design across the F-150 model range over time.