Dodge Suburban Back Up Light Bulb Size

The Dodge Suburban back up light uses a 1156 or 1073 bulb size for the specified model. The replacement chart covers vehicle production years from 1957 to 1958.

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
1958	1156
1957	1073

Bulb Specifications

Description	Bulb Size
ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. 12V, 21W.	1156
ANSI standard (US & Canada). Single-filament bulb with BA15s bayonet base. Lower wattage variant of 1156. 12V, 13W.	1073

Other Locations

Additional Notes

The 1156 and 1073 are the two bulb types specified for the back up lights of the Dodge Suburban, covering the 1957 and 1958 model years respectively.
Both the 1156 and 1073 are ANSI-standardized bulb types recognized in the US and Canada, each using a BA15s single-contact bayonet base.
The BA15s base is a single-contact bayonet fitting, meaning the two bulb types share the same physical base configuration despite differing in wattage.
The 1156 bulb, fitted to the 1958 Dodge Suburban, operates at 12V and 21W, making it the higher-output of the two specified bulbs.
The 1073 bulb, fitted to the 1957 model, operates at 12V and 13W, and is classified as a lower wattage variant of the 1156.
Although the 1156 and 1073 share the same BA15s bayonet base, their wattage difference of 8W means they are not directly interchangeable without accounting for the electrical load difference in the vehicle's circuit.