Battery problems of the 2002 Ford F-150

My husband purchased a used 2002 f150 Ford truck back in 2004. In the past 3 years, the truck has major electrical issues every time it rains for more than 2 days straight. It starts with the radio shutting off while driving. Next the wipers will not work then the power windows wont open. Each time he gets in and out of his car, another electical feature will not work. Finally, when he gets in to start his car and it won't turn over. In April 2009, he has the electrical sensor in the gem model replaced. On April 28th 2010, he had to have the multifunctional fuse box replaced. In March 2011, he had a new battery installed. Today he is waiting for aaa to jump his car as it won't start. I called the dealer who informed me that their are no known recalls for this issue. We were told by another dealer that it sounds like water is getting into the fuse box module due to the front window not beigin properly sealed .

Vehicle dash lights would stay on when vehicle off. Door locks would lock and unlock by themselves while driving. And while the truck was off. Vehicle would be completely dead when go to start. After replacing with a new battery, truck would not start. Had a tow truck come and when he tried to start it, it started right up. After he shut off, it was completely dead would not start. Took truck to garage. It took mechanics 5 hours to find the problem. After checking all the relays and fuse boxes, etc. It ended up to be the fusebox under the dash. The fusebox was corroded and deteriorating due to water damage, which was causing the electrical problems. The mechanic said there was some type of leak from the windshield causing water to enter the fusebox. Thus causing the fusebox damage. The mechanics replaced the fusebox and a relay. I do have the old one that was damaged. He said the windshield needs to be taken out to be resealed on reinstalling. Which needs to be done yet. He said I was lucky not to have any major problems while driving or shorting which could lead to a fire problem.

Windshield seal leaked (rain) along roofline causing multiple electrical problems. Vehicle has multiple system warning lights visible on dash. Short circuit sounds coming from behind dashboard. Warning lights, blower motor and head lights operate without key in the ignition causing battery to be drained. Wipers cut off without warning. Door windows stop working without warning. Vehicle shifts into four-wheel drive without warning. Engine races while parked (revs to 4000 rpm and returns to normal). Sales man informed that Ford will not cover the problem because the truck is out of warranty and to bring truck to dealer (5/3/04). Truck would not start until 5/8/04. Seal to windshield separated from vehicle on left side while driving to dealership (5/10/04). The truck now has excessive wind noise. Truck will no longer start (5/11/04). I called Fords customer and requested that a representative from Ford inspect the truck. Customer service asked that the truck be towed to a Ford dealer. Truck was towed to local dealer. Dealer did not want to help me contact Ford after I informed them that the truck has a defective windshield seal. Dealership informs me on 5/13/04 that the zone supervisor from Ford said that there was nothing that could be done about the problem. In addition, dealer refuses to put statement in writing. The dealer also informed me that for a fee, they could seal the windshield and diagnosis the problem but the dealership where the truck was purchased from should do the repairs.