Jeep Comanche front and rear turn signal bulbs utilize 2357NA, 2057, 2057NA, and 1156 sizes respectively. The replacement chart covers 1986 through 1992 production years with corresponding bulb specifications.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Jeep Comanche front turn signal uses three distinct bulb types across its production years: 2057NA (1986-1988), 2057 (1989-1991), and 2357NA (1992).
The 2057NA and 2357NA bulbs feature natural amber glass, meaning the amber color is built into the bulb itself rather than produced by a colored lens or housing.
All front turn signal bulbs specified for the Jeep Comanche share the BAY15d bayonet base, a dual-contact base that positions its two pins at different heights to prevent incorrect installation.
The front turn signal bulbs across all model years operate at 12V with a dual-filament configuration rated at 26.9W for the high-intensity filament and 8W for the low-intensity filament.
The 2057 and 2057NA are described as brighter variants of the 1157, sharing the same BAY15d base and 12V/26.9W/8W ratings, which reflects a higher candlepower output rather than a difference in wattage.
The 2057 (clear glass) and 2057NA (natural amber glass) share identical electrical ratings and the same BAY15d base, but the amber coating on the NA variant makes them non-equivalent in applications where lens color determines the signal color.
The rear turn signal specification for the Jeep Comanche is consistent across all model years from 1986-1992, with the 1156 bulb used throughout.
The 1156 uses a BA15s bayonet base, a single-contact base distinct from the BAY15d base found on the front turn signal bulbs, making front and rear bulbs non-interchangeable.
The 1156 is a single-filament bulb rated at 12V and 21W, serving only one lighting function per socket, unlike the dual-filament front turn signal bulbs that serve two functions.
All four bulb types in these specifications conform to ANSI standards recognized in both the United States and Canada.