The American Motors Custom front and rear turn signal bulb size is 1034 for this model. The replacement chart covers 1961 to 1962 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 1034 bulb is the sole bulb type specified for the American Motors Custom across all listed positions and years, covering both front and rear turn signals for 1961-1962.
The 1034 is an ANSI-standardized bulb recognized in both the United States and Canada, operating at 12 volts with a dual-filament configuration rated at 21/5 watts.
A dual-filament design means the bulb serves two distinct lighting functions within a single housing, with the higher-wattage filament typically handling the turn signal or stop function and the lower-wattage filament handling a secondary function such as running or parking light duty.
The 1034 uses a BAY15d bayonet base, which is an offset twin-pin mount. The asymmetric pin placement of the BAY15d base prevents incorrect single-filament bulbs from being seated in the socket.
The 1034 is noted as a variant of the 1157. While the two share the BAY15d base and general dual-filament construction, they are not confirmed as interchangeable in these specifications, and substitution without verification of exact electrical ratings could affect circuit behavior.