My F350 won't start. I turn the key and all the dash lights come on, buzz and flash. Wait to start light won't go out and when the key is turned the battery meter drops and i only get a clicking noise. I have recently replaced the starter, alternator, glow plug relay and the starter solenoid. The batteries have a good enough charge to start it, but won't turn over. Any Advice on where or what to check?

 

your gonna have to post in the powerstroke section,these old idi are a different animal.

 

I realize this is an old post but you have a battery issue... I would take them out and load test them...