The Jeep DJ3 front and rear turn signal bulbs both utilize a 1034 size bulb for proper operation. The replacement chart covers vehicle production spanning 1959 to 1966.
The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.
The Jeep DJ3 uses the 1034 bulb for both front and rear turn signals across all listed model years, 1959-1966.
The 1034 is an ANSI-standardized bulb type, meaning its physical and electrical specifications conform to a defined North American standard recognized in both the United States and Canada.
The 1034 is a dual-filament bulb, meaning it contains two separate filaments within a single envelope, allowing it to serve more than one lighting function from a single socket.
The 1034 uses a BAY15d bayonet base, which is an offset twin-pin mount. The offset pin placement is a keying feature that ensures the bulb can only be inserted in one rotational orientation, aligning each filament with its intended circuit.
The 1034 operates at 12 volts, consistent with the standard electrical system voltage found in automotive applications of that era.
The 1034 has a wattage rating of 21/5W, where 21 watts corresponds to the higher-output filament used for the turn signal function and 5 watts corresponds to the lower-output filament used for a secondary function such as a running or parking light.
The 1034 is described as a variant of the 1157 bulb. The 1157 is a widely used dual-filament BAY15d bulb, and the 1034 shares its base type and general configuration, though the two are not confirmed as direct substitutes within these specifications.