The Isuzu Rodeo side marker utilizes 1157NA, 1157, and 194 bulb sizes depending on the specific version of the vehicle. Available data covers the range from 1995 through 2004.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Isuzu Rodeo front side marker uses three distinct bulb types across its production run: the 194, the 1034NA, and the 1157NA, reflecting hardware changes made at different points in the vehicle's history.
The 194 bulb is a T10 miniature wedge type rated at 12V and 3.78W. It served as the front side marker bulb on the Isuzu Rodeo from 1991-1999.
The 1034NA is a dual-filament bulb with a BAY15d bayonet base, rated at 12V and 21W/5W, with natural amber glass. It is described as a variant of the 1157 and was used in the front side marker position for the 2000, 2002, and 2003 model years.
The 1157NA shares the same BAY15d bayonet base and 12V/21W/5W rating as the 1034NA and also features natural amber glass. It was specified for the front side marker on the 2001 and 2004 model years.
Because the 1034NA and 1157NA share the same base type, voltage, and wattage ratings, their physical and electrical characteristics are closely related, though they carry distinct ANSI designations and are not listed interchangeably in these specifications.
The rear side marker position on the Rodeo uses only two bulb types across its documented model years: the 1157 for 1994-1999 and the 168 for 2000-2004.
The 168 bulb is a T10 miniature wedge type rated at 12V and 4.9W. It draws slightly more power than the 194, despite both sharing the same T10 wedge form factor, which means the two are not electrically identical.
The 1157 is a dual-filament BAY15d bayonet bulb rated at 12V and 21W/5W. Unlike the 1157NA and 1034NA, it has no natural amber glass coating, meaning it produces a clear or white output rather than an amber tint from the bulb itself.
The front and rear side marker positions on the Rodeo do not share a common bulb type in any single model year, as the front and rear specifications consistently call for different bulbs throughout the vehicle's production run.
The shift from the 1157 to the 168 in the rear side marker position between the 1999 and 2000 model years represents a change from a dual-filament BAY15d bayonet bulb to a single-filament T10 wedge type, which are not interchangeable due to differences in base design and filament configuration.