07 Galant Speedo problems.
 

Today as I was going out to a friends house, my speedo dropped, and my check engine light came on. I pulled over and shut the car off for a minute and then restarted it and it was just fine. Well on my way to another friends house, hoping that he could look at it, it did it again, this time the tach dropped, and the one thay says how hot and cold your engine is (by the way, I know nothing about cars....)
Its been really humid in Missouri the past couple days and rained like crazy Saturday. This afternoon was the first time I drove it since the rain the other day. I also replaced my Snapshot by Progressive today (monitors my speed and hard breaks, hoping to lower my insurance). It plugs into the computer under the steering column. I dont know if the Snapshot has anything to do with it, or the humidity..

Sorry for writing a book about this.