Alternator/generator/regulator problems of the 2003 Dodge Grand Caravan

Driving to meet my husband. I was on a highway I got up to 60 mph. My van started losing the instrument panel. At first only a little bump (ding) then as I continue driving I lost the whole instrument panel intermittently and the wind shield wipers came on and sprayed wiper fluid and all lights would not work. When I got the panel back it would leave the air bag light on. It had no effect on the rest of the engine. I had something similar happen before and it was a dead battery. I went and had both battery and alternator tested they are fine. It has not happened again but it had happened at least every 2 weeks for 6 months with no answers. This is the first time it completely lost the instrument panel but not the first time it would lose 5 mph or so on the instrument panel and nothing to the engine. I am going crazy thinking my car is possessed! went to a non dealership repair shop and was told that since it was not doing it right now they can't tell anything.

While driving at any speed consumer heard a loud noise coming from the engine compartment, vehicle was taken to the dealership, and technician determined that sound was coming from the alternator which was normal.

When driving with the headlights on lights dimmed, and the heat from the air vents temperature decreased. This occurred when coming to a complete stop, or if consumer removed foot from the accelerator pedal. Dealership replaced the module/alternator, transmission control module, and the main computer, but the problem still occurred.