Ford F-100 Roof Marker Bulb Size

The Ford F-100 roof marker requires bulb size 168 or 97 depending on the specific application for the lighting component. Data for the lighting specifications covers the range from 1973 to 1979.

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

YearsBulb Size
1978-1979168
1973-197797

Bulb Specifications

Description Bulb Size
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.97

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