Ford F-150 Instrument Panel Bulb Size

Additional Notes

• The Ford F-150 instrument panel uses the 194 bulb across the majority of model years covered in these specifications, spanning 1975-1986 and 1988-1998, with the exception of 1987 and 1980.
• Both the 194 and 161 bulbs share the same T10 miniature wedge form factor and operate on a 12V electrical system, which means they are physically interchangeable in terms of socket fitment.
• Despite their physical compatibility, the 194 and 161 bulbs differ in wattage. The 194 draws 3.78W, while the 161 draws only 1W, making them electrically distinct and not functionally interchangeable without consequence.
• The T10 designation refers to a tubular bulb with a width of 10 eighths of an inch, a standard sizing convention used in ANSI-classified miniature automotive bulbs.
• Both bulb types carry ANSI standardization applicable to the US and Canadian markets, meaning equivalent bulbs from different manufacturers are produced to the same electrical and physical specifications.
• The Ford F-150 (1987) is specified with the lower-wattage 161 bulb for the instrument panel, as is the 1980 model year, distinguishing these two years from the rest of the listed range.
• The wedge base design of both the 194 and 161 bulbs means neither requires a separate metal base or bayonet pins. The glass envelope itself acts as the retention mechanism within the socket.