My 97 Astro has been drained dead after 2 and a half days or so of sitting. Nothing that I know of has been draining it. After a new battery, the thing made a clicking noise non-stop (nothing was on, no key in the ignition, etc..) from behind the console area. In an hour, the thing was dead and battery ruined. (It won't take any recharging from a charger.) So, I don't have a clue what it could be. What do you think? (and remember.. I am a woman.. give me very good instructions.) Thanks!

Optional Information:
1997 Chevrolet Astro V6

Already Tried:
Replaced battery. Tried to charge battery. Tried to find something left "on." And now, I just stare at it.