I'm new to the Ford's but fairly handy on my rigs. I have a 2000 f350. It will start usually right on the first start. But shut it off for 10 minutes or so and usually won't start up. AndAnd starter Won't even click. I can hear the relays under the dash clicking but no starter. Wait 30 minutes and it'll usually fire. I've tested the batteries. Their good. Any thought s would be greatly appreciated.