Ford Aerostar Check Engine Bulb Size

The Ford Aerostar check engine light requires a 194 bulb size for proper installation within the instrument cluster. Data for the specified component covers the period from 1993 to 1997.

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

Years	Bulb Size
1994-1997	194
1993	194 (Without Digital Inst. Cluster)

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 3.78W.	194

Other Locations

Additional Notes

The 194 bulb is the sole bulb type listed across all model years in the Ford Aerostar check engine light specifications, covering 1993-1997.
The 194 is classified as an ANSI standard bulb recognized in both the United States and Canada, operating at 12 volts with a power draw of 3.78 watts.
The 194 follows the T10 miniature wedge form factor, a base type defined by its wedge-shaped plastic body that makes direct contact with the socket without a separate metal base.
The 1993 Ford Aerostar carries a fitment condition specifying the 194 bulb applies only to vehicles without a Digital Instrument Cluster, indicating that cluster type is a determining factor in bulb compatibility for that year.