Quote Originally Posted by Driver50x View Post
How long did the car sit since you last drove it? If you have a digital multi meter, hook it up in series with the battery cable to measure the amperage draw with everything turned off. It should not be over 25 milliamps.
..... and if it IS over 25MA you can pull fuses one at a time, watching the meter to see when it drops, to find which circuit is feeding the draw/drain while it's sitting idle, and then go through that one circuit to find the culprit. A simple process of elimination.