I have a question about my 2004 jeep grand cherokee. I have been having some type of electrical problem. It starts by the key fob only unlocking the passenger and rear doors and also the lights not flashing when I hit the unlock button. Then when I get in and try to start it up none of the instruments on the dash work but all the warning lights come on. It will start up and run for about 3-5 seconds and then die. The power windows and locks also will not work with the key in the on position. Then the interior lights would not go off so I disconnected the battery to keep it from dying. The next morning I went out and reconnected the batter to see if I could get it to start and everything worked just fine like nothing was ever wrong. This lasted for a week until the same think happened except this time the alarm system would not turn off even once the car was unlocked and the horn would go off when I tried to start it. After disconnecting the battery again and reconnecting everything worked just fine. I have no idea what the problem could be and any help would really be appreciated.
P.S. all the fuses have been checked and are all working fine. Thanks.