One problem related to fog lights has been reported for the 1999 Jeep Cherokee. The most recently reported issues are listed below.
Fuel gauge reads empty when tank is full, dealer cannot find problem. Will drive for about 30 miles and then fuel tank will read what it is supposed to. Also terrible shaking in front end when braking. Brakes/rotors all new and replaced still shakes. Fog lamps continuously burn out, dealer states wiring harness. Have had to pay the deductible on this numerous times. . . Like it is my fault they burn out.