The Jeep 6-226 uses 1154 bulb size for both front and rear turn signal applications. The replacement chart covers 1956 to 1957 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.
The 1154 is the sole bulb type specified for the Jeep 6-226, covering both front and rear turn signal positions for the 1956-1957 model years.
The 1154 is an ANSI-standardized bulb recognized in both the United States and Canada, meaning it conforms to a defined set of electrical and physical standards shared across those markets.
As a dual-filament bulb, the 1154 contains two separate filaments within a single envelope, allowing it to serve more than one lighting function from a single socket.
The 1154 uses a BAY15d bayonet base, a two-pin offset base type where the two pins are positioned at different heights to ensure the bulb can only be seated in one rotational orientation.
The 1154 is described as an older variant of the 1157, meaning the two types share a related design lineage, though they are not confirmed as interchangeable within these specifications.
The 1154 is rated for both 6V and 12V operation, indicating compatibility with either electrical system voltage, which is relevant given that mid-1950s vehicles were commonly transitioning between 6-volt and 12-volt systems during that era.