American Motors Javelin front side marker bulbs use 194 or 67 size, while rear side marker bulbs use 194 size. The replacement chart covers 1970 to 1974 production 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 194 bulb is the most prevalent type across these specifications, appearing in both front and rear side marker positions for the American Motors Javelin across the majority of model years listed.
The 194 is a T10 miniature wedge bulb rated at 12V and 3.78W, operating under the ANSI standard applicable in both the United States and Canada.
The T10 wedge base design requires no locking mechanism, as the bulb is held in place by tension within the socket, which distinguishes it from bayonet-style bases.
The rear side marker position on the Javelin uses the 194 bulb uniformly across all five model years in the specifications, from 1970-1974.
The front side marker position deviates from this pattern in the 1971 Javelin, which uses a size 67 bulb rather than the 194 found in the surrounding model years.
The 67 bulb carries a BA15s single-contact bayonet base, a base type that is physically incompatible with the wedge socket used by the 194, making the two bulbs non-interchangeable.
At 8W, the 67 bulb draws more than twice the wattage of the 194, which means substituting one for the other would also produce a mismatch in electrical load regardless of any socket incompatibility.
The 67 bulb is described as a lower wattage variant of the 1156, sharing the same BA15s bayonet base but differing in power output, which places it in a distinct performance category from the wedge-type 194.
Both the 194 and 67 bulbs conform to ANSI standards for the United States and Canada, indicating standardized ratings for voltage, wattage, and base configuration within those markets.
The front side marker socket for the 1971 Javelin must accommodate a BA15s bayonet base, while the same position on 1970 and 1972-1974 models requires a T10 wedge socket, reflecting a hardware difference between those model years.