2006 Ford Expedition will not start this morning, battery checks 12 volts, will not do anything when turn key to start position

SOURCE: Ford Expedition Check Engine Light does not turn on...

perhaps a bulb is out in that panel! I wouldn't doubt it! good place to start

SOURCE: 2000 ford windstar won't crank over,but pats keys good, and batt.

First thing I would check is to see if you have power at the trigger wire of the starter motor while someone is trying to start the vehicle for you. It will be a Yellow with a light blue trace. If you do then I would check to see if the main battery cable has power to it all the time when someone is trying to crank it. If it does then I would hold a test light on the case of the starter motor and have someone try to crank it. Make sure that the ground you use for this test is on the negative battery terminal not just anywhere on the car. If the test light lights while you are cranking it then you have a bad ground. Hook up a set of jumper cables from the battery negative terminal and clamp it directly on to your starter motor and see if it starts. If you check it and the test light doesn't light up and all the other checks are good then your starter motor has failed. If one of the other tests has failed then you have a starter relay problem or something else. let me know what you find out.

SOURCE: 2004 FORD TAURUS WONT START. WHEN TRY TO TURN

just a wild shot in the dark are the battery cables on real tight also you should get @ 13 vdc on a good battery

SOURCE: 99 Ford Expedition Won't start: all the idiot

Yes it could be the ignition switch. You may need a security bit for the 2 screws that hold the switch to the column. Autozone, Oreillys and sometimes Walmart carry them.
There are a few screws in the plastic housing around the steering colum. Usually Phillips type. Get the plastic off and the switch will be there with at least 2 security screws holding it to the column. Then just remove and replace.

SOURCE: 2000 Ford Ranger XLT electrical problem

I suggest the possibility of a loose connector, maybe the main engine connector remove inspect pins apply diaelectric compound and reconnect the connector with care to assure good contact with all pins.