Peterbilt 389 Back Up Light Bulb Size
The Peterbilt 389 back up light uses 1156 and P21W bulb sizes for the exterior lighting components. Available data covers the period from 2008 through 2017 for the specified vehicle.
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 | US Type | EU Type | Shop |
|---|---|---|---|
| 2011-2017 | 1156 | P21W | Check Price |
| 2008-2009 | 1156 | P21W | Check Price |
Bulb Specifications
| Description | Type | Shop |
|---|---|---|
| ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. 12V, 21W. | 1156 | Check Price |
| ECE standard (Europe & worldwide). Single-filament signalling bulb with BA15s bayonet base. 12V, 21W. | P21W | Check Price |