Recheck your battery to see if hooked up right.
The diode in the alternator is probley going bad, Check charging system. And replace alternator.
Faulty Alternator?
Wrong alternator or new alternator is bad. no resetting needed
Inside the alternator
More than likely the alternator is defective. Have the charging system checked at your local auto parts store.
I would check your alternator*(check the spelling).
I obviously means that there is something wrong with the alternator or battery. When both lights are on 80 percent of the time its the alternator. Either your belt fell off or your alternator went bad.
your alternator ain't charging your battery or a bad connection draining the battery
Have your alternator checked. That's what charges the battery.
you have a short where negative is touching the metal of the car or it is grounded inproperly
It could be your battery, the alternator or your starter... but more than likely it sounds like your alternator is bad.
voltage regulator.