what causes my battery to drain overnight?
I have a pontiac grand am se. With my car off and key out of the ignition my blower
motor will turn on and even when I turn the blower motor to off my car battery still ends
up drained by the next day
Power drain,s are sometime hard to find,i would suggest,removing one fuse at a time,and check the draw from the battery with a meter,this may be the only way to find the issue.
Charge your battery up again. Once the battery is a full charge, locate the fuse for the blower motor and pull it out. See if the battery is dead the next day. If battery is fine, I would replace the blower motor resistor. Sounds like it may have short circuited some place.
You can add a toggle switch to your blower motor circuit, it will cut all power to the blower motor.Or a post disconnect at your battery, in case you have more than one thing draining your battery.
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