1979 300 Turbo Diesel Not starting. EASY?
 

The car was running fine on Saturday night.
It rained a little that day and when I finished driving the car I noticed as I opened the door that a 'buzzing" noise was present which I hadnt heard before -or at least in a while.
Now when you put the key in the ignition, you get a buzz, and thats it. None of the gauges react, the glow-light doesnt come on and essentially you can not operate anything electric. SURE if you continue to turn the key, the buzz goes away -and does not come back for a few hours- and there is no noise made from the engine compartment.
I've tried the "put it in neutral" thing but I get nothing. The battery is BRAND NEW.
HELP please.. any suggestions will be taken regardless of how extreme! LOL

First thing Id be doing is checking the battery connections and next would be the system grounds.