Jeep CJ7 front side marker bulbs use 158 or 194 size, while rear side marker bulbs use 194 size. The replacement chart covers 1976 to 1986 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 Jeep CJ7 front side marker uses two distinct bulb sizes across its production run, with the 194 fitted to 1976-1982 models and the 158 fitted to 1983-1986 models.
Both the 158 and 194 are ANSI-standardized miniature wedge bulbs sharing the T10 form factor and a 12-volt operating voltage, making them physically interchangeable in terms of socket fitment.
Despite their shared T10 wedge base, the 158 and 194 differ in wattage. The 158 draws 3 watts while the 194 draws 3.78 watts, a distinction relevant to circuit load and socket compatibility.
The rear side marker on the Jeep CJ7 uses the 194 bulb exclusively across the 1983-1986 model years covered in the specifications.
For 1983-1986 models, the front and rear side marker positions call for different bulb sizes, with the front requiring the 158 and the rear requiring the 194. Substituting one for the other would result in a wattage mismatch even though both share the T10 wedge base.
The T10 wedge base is a common miniature bulb format in which the glass envelope itself acts as the retention mechanism within the socket, requiring no separate bayonet or screw fitting.
The 194 bulb is the more widely specified of the two across the CJ7 side marker positions, appearing in both the full front side marker range of 1976-1982 and the entire rear side marker range of 1983-1986.