Truck started fine.Then it made a grinding sound and died.I have no dashboard lights,will not even make a sound when I turn key.I had battery checked,when I installed it back in the truck and turned the key,I had dashboard lights.When I tried turning it over I lost lights and still no cranking over.

SOURCE: Truck turning-over when jumping battery

if you replace the alternator im sure it will be fine while your driving the battery is not getting charged so thats the only thing that it could be

SOURCE: 2008 F-150 wont start

Radio could be wired wrong. Check the constant and accy power on the radio with a multimeter and make sure you are getting 12V on the constant and getting 12V on the accy only when the car is in accy or on. Also make sure the wire harness is properly wired. This can happen often if the radio constant and accy power wires are wired in reverse.

SOURCE: 2003 Ford F250 superduty diesel 7.0L ,no start in cold

i would say your F250 has a {short circuit}going by all the facts you tell me there has to be a loose or faulty electrical connection in the ignition circuit.get it rechecked also check the main earth strap it could be broke/corroded.also check the main voltage regulator as this can cause this problem.hope this helps.adrian

SOURCE: cranks but won't start,new fuel pump,no power going to pump

look at inerata reset switch check for power at the switch

SOURCE: 2006 Ford F-350 6.0 power stroke will not start

This really is the sign of a dying battery - one that may not be getting any charge to replace it. I would disconnect the +ve lead and put battery on charge for at least 24hrs (with an intelligent charger). Then check Alternator for correct output when running. Also check for current drain when turned off. A high drain may indicate a blown diode in the alternator - the rectifier block is usually replacable without scrapping the whole unit.