This material discusses in detail the fuse diagrams of the Jeep Wrangler (first generation; YJ): 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995 model year.
Fuse #7 in the passenger compartment is responsible for the cigarette lighter.
In the engine compartment
Located near the battery, behind the plastic cover.