The American Motors Spirit front and rear side marker bulb size is 194 for the specified vehicle. The replacement chart covers 1979 to 1983 production years with bulb size specifications.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The American Motors Spirit uses the 194 bulb for both front and rear side markers across the full 1979-1983 production run.
The 194 is an ANSI-standardized bulb type, meaning its specifications are governed by a recognized North American industry standard applicable in both the United States and Canada.
The 194 bulb follows the T10 miniature wedge form factor, which uses a tapering plastic base that presses directly into a socket without a separate metal base or locking pins.
Operating voltage for the 194 bulb is rated at 12 volts, consistent with standard automotive electrical systems of that era.
The 194 bulb carries a power rating of 3.78 watts, placing it in the low-wattage category typical of side marker and courtesy lighting applications.
Because the front and rear side marker positions on the American Motors Spirit share the same 194 bulb, a single bulb type services all four side marker sockets on the vehicle.
The T10 wedge base format is widely used across many vehicle makes and model years, which contributes to broad aftermarket availability of the 194 bulb in both incandescent and LED variants.
Wedge-base bulbs such as the 194 are retained in their sockets by friction rather than a bayonet or screw mechanism, so fitment depends on socket cavity tolerance rather than a locking feature.