Ford C800 front and rear side marker bulbs utilize 168, 194, and 1895 bulb sizes depending on specific applications. Replacement chart data covers 1980 through 1989 production years with corresponding bulb size specifications.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Ford C800 side marker bulbs draw from three ANSI-standard bulb types across its model years: the 168, the 194, and the 1895, all rated at 12 volts and all classified as miniature wedge bulbs.
The 168 bulb is the most frequently specified type across both the front and rear side marker positions on the Ford C800, appearing across the widest span of model years in the data.
The 168 and 194 are both T10 miniature wedge bulbs operating at 12V, but they are not electrically identical. The 168 is rated at 4.9W while the 194 is rated at 3.78W, meaning the two draw different amounts of current despite sharing the same physical form factor.
Because the 168 and 194 share the T10 wedge base, one may physically fit a socket intended for the other. However, the wattage difference means substituting one for the other would alter the circuit load, which is a relevant consideration for side marker applications.
The 1895 is a T5 miniature wedge bulb rated at 12V and 0.9W, making it physically smaller and significantly lower in wattage than both the 168 and the 194. It is not interchangeable with either T10 type.
The front side marker position on the Ford C800 used the 168 bulb from 1983-1989, the 1895 in 1982, and the 194 in 1980-1981, indicating that the same socket position received different bulb specifications across the production run.
The rear side marker position shows a similarly varied pattern. The 168 appears in 1981-1982 and again in 1987-1989, while the 194 is specified for 1983-1984, and the 1895 is listed for 1980.
The front and rear side marker positions do not always share the same bulb specification for a given model year. In 1983 and 1984, for example, the front position uses the 168 while the rear position uses the 194, so the two positions require separate verification before replacement.
All three bulb types in these specifications conform to ANSI standards applicable in both the United States and Canada, indicating consistent part availability across the North American market.
The 1895 bulb, at 0.9W, produces considerably less light output than the 168 at 4.9W or the 194 at 3.78W. Its use in specific model years for side marker functions reflects a lower luminous intensity requirement in those applications relative to years using the higher-wattage types.