Chevrolet El Camino HVAC Temperature Control Bulb Bulb Size

The Chevrolet El Camino hvac temperature control bulb uses bulb size 53 for the lighting system. Data for the specified component covers the range from 1959 to 1960.

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 Type	Shop
1959-1960	53	Check Price

Bulb Specifications

Description	Type	Shop
ANSI standard (US & Canada). Single-filament bulb with BA9s base. 12V, 2W.	53	Check Price

Other Locations

Additional Notes

The ANSI 53 bulb is the sole type specified for the Chevrolet El Camino HVAC temperature control across both listed model years, 1959-1960.
The 53 bulb operates on a 12-volt electrical system and draws 2 watts, placing it in the low-wattage range typical of instrument and control illumination applications.
The BA9s base is a miniature bayonet fitting with a 9mm cap, which is a common standard for small indicator and panel bulbs in automotive interiors.
The 53 bulb carries ANSI recognition for use in the United States and Canada, meaning it conforms to a standardized specification shared across both markets.
As a single-filament bulb, the 53 type serves a straightforward illumination function with no secondary filament for dimming or dual-intensity operation.