mine was backwards, my lights wouldnt turn on, my gas would be on empty and the lil light wouldnt turn on at all, turned out to be the alt, find out if they check the regulator? cause i went to autozone and she said its not the alt its your battary 1 week later its doing the same thing, took it back and again its not the alternator, must be the ecu, so i took it to advanced auto and it 5 min they were like the alt is charging fine but the regulator isnt working on it.