So My 2000 V6 Stang Started Acting Funny The Day Before Yesterday, I Noticed That The Car Wouldn't Start, But I Think That Was due To The Theft Protection.. But Ever Since The Headlights Been dimming Out On Me, The Dash lights As well... And all the dash hands would fall when the mileage reader read nothing but (---------)... It does this mostly when I pull my light switch to turn on my lights. I know it couldn't be the alternator because I just switched it with a new but one thing is different and that is how bright the lights are now.. Could it be a battery problem?