Jeep Scrambler front side marker bulbs use 158 or 194 size configurations, while rear side marker bulbs require 194 size bulbs for proper illumination. The replacement chart covers 1981 through 1985 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 Scrambler side marker system uses two bulb types across its model years: the 158 and the 194. Both are ANSI-standardized miniature wedge bulbs classified under the T10 form factor and rated for 12-volt electrical systems.
The primary distinction between the 158 and 194 bulbs is their wattage. The 158 is rated at 3W, while the 194 draws 3.78W. Although both share the same T10 wedge base, they are not the same specification and are not listed as interchangeable within these fitments.
The front side marker position on the Jeep Scrambler used the 158 bulb for the 1983-1985 model years.
For the 1981-1982 model years, the Jeep Scrambler front side marker position used the 194 bulb rather than the 158.
This means the front side marker specification changed between the 1982 and 1983 model years, shifting from the 194 to the 158.
The rear side marker position on the Scrambler used the 194 bulb for the 1983-1985 model years.
In the 1983-1985 model years, the front and rear side marker positions on the Scrambler used different bulb types, with the front requiring the 158 and the rear requiring the 194.
The T10 wedge base is a common miniature bulb format in automotive lighting. The shared base type between the 158 and 194 means physical installation is possible with either bulb, but the wattage ratings differ, making position-specific fitment relevant.
Both the 158 and 194 bulbs carry ANSI standardization applicable to the US and Canadian markets, indicating conformance to a defined set of electrical and physical performance criteria for those regions.