So on lunch break, I went through the steps again and was very thorough. Disconnected battery, opened up C200 (and the other box) dried it with a hair dryer, then sprayed it down with the circuit cleaner, let it dry, applied the diaelectric grease, put it back together along with the battery.
It cranked successfully!
All gauges are back to normal. The key dance resulted in a "Done" read, no codes. However the air bag light stayed on???
Hopefully nothing will pop back up after a bit. I know disconnecting the battery can reset codes. Fingers crossed. But once again the over head is back on and it appears to be running well.
I'll keep you updated...
Is there a way to prevent the water/moisture from reoccuring?
But thanks very much. I have a running vehicle without the hefty repair bill. So I know have the time to troubleshoot anything that may pop up.
Thanks again and I'll keep you posted.