[Tech II]

My guess would be loss of ground......pull the sill plate trim from the door openings, and stick your hand under the carpet......if it is wet, you could have a corroded ground or grounds or you could have a corroded splice that goes to a ground.......one way to prove this, is run a redundant ground to one of the circuits that is not working......find it's ground, and attach the redundant ground to it....if the circuit associated with it now works, you know it's a ground problem........