Hi, I have a 1995 buick riviera and the battery keeps draining over night. The battery is good, it keeps a charge when the cables are off but when I go to start it nothing happens. But when I get a ju

Might be a large parasitic power drain on the battery. http://www.wikihow.com/Find-a-Parasitic-Battery-Drain

if the power antenna stopped working.it is still drawing power.unplug it. so it won't drain the battery.

I bet Its your Auto Leveling system. After 10 years mine would randomly run all night even on a level surface. Its a light humming sounds when on. I went to get in my car two days after battery died and heard it running by chance. Just pulled the fuse it still drives Level :) Fuse is under back seat marked under cover.