Plymouth Turismo front inner turn signal utilizes a 1157 bulb size, while the front outer turn signal requires a 168 bulb size, with additional front and rear turn signal applications using 1157 or 2057 bulb sizes. The replacement chart covers 1983 to 1987 vehicle production years and contains bulb size specifications for turn signal applications.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Plymouth Turismo turn signal bulb specifications cover the 1983-1987 model years across four distinct positions: front inner turn signal, front outer turn signal, front turn signal, and rear turn signal.
The 1157 bulb is the most widely used type across these specifications, appearing in the front inner turn signal, front turn signal, and rear turn signal positions for multiple model years.
The 1157 is a dual-filament bulb operating at 12V with a 21W high filament and 5W low filament, mounted on a BAY15d bayonet base, conforming to ANSI standards for the US and Canadian markets.
The 2057 bulb shares the same BAY15d bayonet base as the 1157 but operates at higher wattages of 26.9W and 8W, making it a brighter variant within the same base family.
The Plymouth Turismo (1983-1984) used the 2057 bulb in both the front turn signal and rear turn signal positions, while the 1985-1987 models transitioned to the 1157 for those same positions.
Although the 1157 and 2057 share a BAY15d bayonet base, they are not identical in output, and substituting one for the other affects the luminous intensity of the turn signal.
The front outer turn signal on the 1986-1987 Plymouth Turismo uses the 168, a single-filament miniature wedge bulb of the T10 type, rated at 12V and 4.9W, which is physically and electrically distinct from the dual-filament bulbs used elsewhere on the vehicle.
The separation of the front turn signal into inner and outer positions on the 1986-1987 models reflects a two-bulb front assembly, with the inner position using the 1157 and the outer position using the lower-wattage 168.
The 168 wedge bulb uses a friction-fit base rather than a bayonet mount, meaning it is not interchangeable with either the 1157 or the 2057 despite all three appearing within the same vehicle's lighting system.
All bulb types listed in these specifications conform to ANSI standards applicable to both the United States and Canada.