Bought a new battery because the car died on me outside Mcdonalds.
I think the alternator may be buggered/on it way out, multi-meter shows same voltage at the battery when the car's off and when it's started. Diag used to show 14.4v when running but now it doesn't go past 12v.
And i changed the passenger side brake light (pointed out by the person who brought the battery).
So you have diagnosed that your alternator isn't giving out any/enough charge and because of this you had a flat battery. So......... you replaced the battery