The Jeep J-2700 front turn signal uses bulb sizes 199, 1156, or 1034, while the rear turn signal uses 1156 or 1034 bulb sizes. The replacement chart covers 1965 through 1970 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 1034 bulb is the most frequently specified size across the Jeep J-2700 turn signal positions, covering both the front and rear turn signals for the 1965-1968 model years.
The 1034 is a dual-filament bulb rated at 12V and 21/5W, operating on a BAY15d bayonet base. The two wattage values correspond to its two filaments, which serve separate lighting functions within a single housing.
The 1034 is classified as a variant of the 1157 under the ANSI standard recognized in both the United States and Canada.
For the 1969 Jeep J-2700, both the front and rear turn signals share the 1156 bulb, making it the only model year with a uniform bulb size across both positions.
The 1156 is a single-filament bulb rated at 12V and 21W, fitted with a BA15s bayonet base, and is recognized under the ANSI standard in the United States and Canada.
The 1970 front turn signal position uses the 199 bulb, which is a single-filament type rated at 12V and 21W with a BA15s bayonet base. It is classified as a variant of the 1156.
Although the 199 and 1156 share the same BA15s base and electrical ratings, they are distinct ANSI part numbers. The variant relationship does not guarantee interchangeability in all applications.
The BAY15d base used by the 1034 is physically distinct from the BA15s base used by the 1156 and 199. These two base types are not interchangeable, and substituting one for the other is not possible without modification.
The 1970 Jeep J-2700 rear turn signal retains the 1156 specification, while the front position shifts to the 199, meaning the two positions require different bulbs in that model year despite sharing the same wattage and base family.