Chrysler Newport Back Up Light Bulb Size

The Chrysler Newport back up light bulb size chart specifies 3 distinct bulb sizes: 1156, 1073, and 1129 for this vehicle model. The replacement chart covers vehicle production years spanning 1951 to 1981.

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
1966-1981	1156
1965	1073
1962-1964	1156
1961	1073
1958-1960	1156
1956-1957	1073
1951-1955	1129

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
ANSI standard (US & Canada). Dual-filament bulb with BAY15d bayonet base. Variant of 1157. 12V, 21/5W.	1129

Other Locations

Additional Notes

The back up light bulb specifications for the Chrysler Newport span model years 1951 through 1981, covering three distinct bulb types across that range: the 1156, 1073, and 1129.
The 1156 is the most frequently specified bulb across the Newport's back up light fitments, appearing in the majority of model years from 1958 through 1981, with isolated exceptions in 1961 and 1965.
The 1156 is an ANSI-standard single-filament bulb rated at 12V and 21W, fitted with a BA15s bayonet base, and is recognized for use in both the United States and Canada.
The 1073 shares the same BA15s bayonet base as the 1156 but operates at a lower wattage of 13W, making the two bulbs physically interchangeable in terms of base type, though their wattage output differs.
The 1073 is specified for the Chrysler Newport in 1956, 1957, 1961, and 1965, representing years where the lower-wattage variant was factory-designated rather than the higher-output 1156.
The 1129 is a dual-filament bulb rated at 12V with a 21/5W output, fitted with a BAY15d bayonet base. Its dual-filament construction and BAY15d base distinguish it from both the 1156 and 1073, which use the single-filament BA15s base.
The 1129 is specified for the Newport across model years 1951 through 1955, making it the earliest back up light bulb type in the dataset for this vehicle.
Because the 1129 uses a BAY15d base and the 1156 and 1073 use a BA15s base, these bulb types are not directly interchangeable despite sharing a similar bayonet-style mounting format.
The 1129 is noted as a variant of the 1157, a widely recognized dual-filament automotive bulb, which places it within a different functional and electrical category than the single-filament 1156 and 1073 types.
All three bulb types specified for the Newport back up lights conform to ANSI standards applicable in both the United States and Canada.