The Plymouth TC3 uses 168 bulb size for both front and rear side marker applications. The replacement chart covers 1980 to 1982 model 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 168 bulb is the sole bulb type specified for the Plymouth TC3 across all listed side marker positions and model years.
The 168 is classified as a T10 miniature wedge bulb, a form factor defined by a wedge-shaped base that seats directly into a socket without a separate metal cap or bayonet pins.
The T10 designation refers to the bulb's tubular envelope, with the numeric portion indicating a width of 10 eighths of an inch.
The 168 operates at 12 volts and draws 4.9 watts, placing it in the low-wattage range typical of marker and courtesy lighting applications.
The 168 conforms to ANSI standards recognized in both the United States and Canada, meaning the specification applies uniformly across North American markets.
The Plymouth TC3 uses the same 168 bulb for both the front and rear side marker positions across the 1980-1982 model years, indicating full interchangeability between those two locations on the vehicle.