Renault LeCar Back Up Light Bulb Size

The Renault LeCar back up light requires bulb sizes 1156 and P21W depending on the specific version of the vehicle. Data for the bulb sizes covers the range from 1977 to 1983.

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
1977-1983	1156

Bulb Specifications

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

Other Locations

Additional Notes

The Renault LeCar uses the 1156 bulb for the back up light across all model years represented in the specifications, spanning 1977-1983.
The 1156 is an ANSI-standardized bulb type, meaning its physical and electrical characteristics conform to a defined North American standard shared across many vehicle manufacturers.
The 1156 operates on a 12-volt electrical system and draws 21 watts, which is typical of incandescent automotive signal and reverse lighting applications.
The bulb uses a BA15s bayonet base, a single-contact fitting where the "s" designation indicates a single pin on the base rather than the offset dual-pin arrangement found on related bayonet types.
As a single-filament bulb, the 1156 serves one lighting function only, distinguishing it from dual-filament variants such as the 1157, which handles two functions through separate filaments.
The BA15s bayonet base requires a quarter-turn insertion method, where the bulb is pressed into the socket and rotated to lock into place.
Because the 1156 is an ANSI-standardized type, physically compatible aftermarket and OEM replacements from various manufacturers are generally available across the US and Canadian markets.