Two problems related to defogger have been reported for the 1999 Jeep Wrangler. The most recently reported issues are listed below.
Anytime I turn the defogger during rain water comes into the vehicle.
1999 Jeep Wrangler with ground wire problems **answered by ric willard** cc the recall was 99v117000. The vehicle was taken to the dealer for the recall. After the repairs the problem persisted. The consumer reached behind the cluster and when he pushed on one of the plugs they moved about an eighth of an inch. The consumer then heard the latched snap into position and he hasn't had a problem since. The heater also had a problem that the consumer thought would be corrected by recall but was not. The system changes the location of the air flow on it's own.