Jeep Tornado Back Up Light Bulb Size

The Jeep Tornado back up light bulb uses either 1156 or 1073 size bulbs depending on the specific vehicle configuration. The replacement chart covers 1962 through 1965 production years with corresponding bulb size specifications.

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
1965	1156
1964	1073
1962-1963	1156

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 bulb is the most frequently specified back up light bulb for the Jeep Tornado, appearing in the 1962-1963 and 1965 model years.
The 1156 is a single-filament bulb operating at 12 volts and 21 watts, fitted with a BA15s bayonet base, and classified under the ANSI standard for the US and Canada markets.
The 1073 bulb shares the same BA15s bayonet base and 12-volt operating voltage as the 1156, but draws significantly less power at 13 watts rather than 21 watts.
The 1073 is specified exclusively for the 1964 Jeep Tornado, setting that model year apart from the surrounding years in terms of back up light wattage output.
Because the 1073 and 1156 share the same BA15s bayonet base, they are physically interchangeable in the socket, though substituting one for the other results in a difference in light output due to the wattage gap between the two bulbs.