Ford F-150 Ash Tray Bulb Size

Additional Notes

• The Ford F-150 ash tray bulb specifications cover three distinct bulb sizes across the model years listed: 37, 161, and 1892.
• The bulb 161 is the most frequently specified across the listed years, covering the Ford F-150 from 1988-1996. It is an ANSI-standard miniature wedge bulb in the T10 form factor, rated at 12V and 1W.
• The bulb 1892 is specified for the 1975-1979 and 1985-1986 model years. Like the 161, it is an ANSI-standard miniature wedge bulb, but it uses the smaller T5 form factor and draws 3W rather than 1W.
• The bulb 37 is specified for the 1997-1998 model years. It shares the T5 form factor with the 1892 but is rated at only 1W, making it a lower-wattage unit despite the identical physical housing type.
• Although the 37 and 1892 both use the T5 wedge form factor, their wattage ratings differ at 1W and 3W respectively. This distinction is a relevant fitment consideration, as substituting one for the other may affect circuit load.
• The 37 and 161 share the same 12V, 1W electrical rating but differ in form factor, with the 37 using a T5 base and the 161 using a T10 base. These two bulbs are not physically interchangeable despite identical wattage.
• All three bulb types listed are ANSI-standard units applicable in both the United States and Canada, indicating standardized availability across North American markets.
• The T10 form factor of the 161 bulb is physically larger than the T5 form factor shared by the 37 and 1892 bulbs. Fitment is specific to the socket size present in each model year's ash tray assembly.