I did the same thing in my SD, except it didn't rain and i thought to roll the windows down while i still had some power. It then siezed the next day and i had to have the car towed. Knew it was on the fritz for a while though, i learned that an abnormally high voltage level generally meant just a surfice charge on the battery. Oddly enough hooking up my amp ended up solving the problem until the trip home from tallahassee. Wasn't fun with no radio or a/c.
Ryan

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83 300SD.......sold
96 integra SE....sold
99 a4 quattro....sold
2001 IS300.......sold
2002 330i.........current.
2004 highlander limited....current.