When you say "doesn't start" do you mean that when you turn the key the starter doesn't turn and there is no "clicking" sound or anything?
With the key in the "on" position, is the "theft" light flashing?
Well two weeks ago I went to store n all sudden couldnt turn wheel..well belt busted. Replaced n didnt start. Caked battery it was good. Ckd alternator n it was bad. So got new one. Still would start ckd starter n put new one in. Still nothing
Sent from my SCH-R530C using Mustang Evolution mobile app
Since it doesn't even make a clicking noise, I'd look at the starter relay that's located in the power distribution box in the engine compartment. If you find that relay is working correctly, then the next thing to check is the starter solenoid.