I have a year 2000 jeep grand cherokee 4.7, When i switch key on all is normal, but after starting the power windows stop also overhead dispay freezes also after 1 min of engine running the gauges stop and most of the warning lights come on on dash panel. If i disconect the two small wires on alternator and start car all faults are gone when car isnt charging, The charge is 13.9v. One more thing if i disconect battery for 10 mins the problem goes for a couple of mins then returns. Have had it to dealer, they replaced BCM, PCM, alternator, several wires, but its still the same. Any ideas Thanks