Hi, 1990 Mercedes 190E 2.0 (Lovingly looked after...1990) Very wet weather today, car gradually lost power to wipers, then lights and heater. Central locking , hazzards, and dash lights are ok. Car ran ok but faultered momentarily when power lost to main lights. But then drove ok... Is this just due to water do you think? Bit worried... leaving her to dry at moment.... any thoughts??