Battery Light backwards Please help!!

Dumb question but you are turning the key off all the way? If this is correct then you may have a faulty voltage regulator on your alternator.Is your battery being drained while the car is off? Get a voltmeter (if you can) and test the voltage at the battery terminals,Test both with the car off and with the engine running.If you can't test then go up to Advanced auto or Napa and see if you can have someone come out with a meter and test for you.Need the exact voltage (decimal included). Also check the wiring going to the main harness connected to the alternator.Make sure there are no excessively loose or damaged wires.