Electrical problems after car wash

I just bought a 97' camaro (nothing, it's the v6) and it's been good all week. Today I decided to get it washed at a touch free car wash, and it all went downhill from there. I'm hoping to get a lot of suggestions, as this is my first F-Body.

Issues:
Speedo drops to zero while coasting out of gear, returns when I put it back in gear (wheel speed sensor?)
Low Trac and Brake lights flashing, many random quick flashes (wheel speed sensor?)
Engine died twice on the way home while stopped in traffic. Started back up immediately. (???)
Lots of water intrusion on driver side door during car wash. Good thing I noticed my leg get wet, I hit MUTE on the stereo so fast... Guess it's good I didn't go for paper cone speakers. :lol:

I'm letting it dry right now, but I still want to seal up/fix whatever was faulty. Next time it rains I don't want to be dead on the road.