[villagetinker]

Have you checked to see ALL of the lights are off? Try this, go out to the car at night with all of the lights off in the garage (use a flashlight), and look carefully to see if all of the lights are out. I have found: an under the hood light that remained on when the hood was closed, a glove compartment light that remained on when the door was closed, and a switch that somehow was moved to the wrong position and caused some interior lights to stay one. All these for over several years on different cars. On the newer cars some of these might be "settings" on a computer screen. With all of the computers on the newer cars, i have no idea if 100 ma is an excessive drain, I had a neighbor that found out the hard way they had to take their car out and drive it at least once every 2 weeks or end up with a dead battery. They opted of a battery tender.