Just got this car, a 98 camry 4cyl.All lights flicker,like a steady pulse.I've replaced the alt and the battery,no luck.The battery light will stay on for a few minutes after i turn it on,even if i rev it up to 1500.If I hit the brakes or use the turn signal,the stereo turns off and on really quick.If i do this with the headlights on,the headlights dim a good amount.I've already cleaned all engine grounds,batt cables look good.Kick panel grounds cleaned and checked.HELP!!! lol