electrical gremlins are back

Since my previous thread, No Power in the car, but there is in the engine bay ,I got power in the car and all was good. The car would start, had all lights (except the DS brake light and hazards but that's a different issue) wipers worked, everything. That was Sunday and I didn't touch the car all week while I've been at school and work until today when I decided I would go put it my new flasher yo try and get the hazards to work. And there was nothing!!!! I have 12v at the battery, the starter relay, and the alternator. I put my positive lead on at the ignition wire at the bulkhead and again 12v. I have a voltmeter inside the car and when I open the door, it moves the gauge to 10v, so I know there is power at the door switches. Then when I turn the key to "on" it reads 12v!!!! I've looked at factory diagrams over and over and even the simplified one that shows the igntioon wire through the bulkhead to the ammeter and then ignition switch, headlight switch, and fuse box and so fourth. Any suggestions would be awesome because I've been at this for hours and really need to do my homework now.