Ford E-350 Automatic Transmission Indicator Bulb Size
The Ford E-350 automatic transmission indicator bulb uses 3 different sizes: 194, 37, and 1445. A replacement chart documents bulb size specifications across the 1975 to 1998 production range.
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 |
|---|---|
| 1992-1998 | 194 |
| 1988-1991 | 37 |
| 1987 | 1445 |
| 1986 | 161 |
| 1985 | 1445 |
| 1975-1980 | 1445 |
Bulb Specifications
| Description | Bulb Size |
|---|---|
| ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 3.78W. | 194 |
| ANSI standard (US & Canada). Miniature wedge bulb (T5). 12V, 1W. | 37 |
| ANSI standard (US & Canada). Single-filament bulb with BA9s base. 12V, 2W. | 1445 |
| ANSI standard (US & Canada). Miniature wedge bulb (T10). 12V, 1W. | 161 |