This is my first post and I hope someone can help. I have a 2000 F350 7.3L. I changed my glow plugs a couple of days ago. After I was finished, I forgot to hook up the glow plug wiring harness on the drivers side. I got in and tried to start the truck and it fired right up but was running very rough. When I realized what I had done. I shut the key off and hooked up the wiring harness. When I got back in; the truck tried to start but acted as if the batteries were draining very quickly. The accessory lights went dim and then nothing.
When I put the key in the ignition, while the door is open, the buzzer will come on but the dome lights that used to come on, no longer come on. There are no accessory lights, no dash lights, no radio, no headlights, nothing. There is a very fast clicking noise coming from the top right relay in the interior fuse panel. When you pull the relay the clicking noise stops. Obviously because the relay is what is switching.
I tested both batteries and they read 12.6 volts or higher. I have pulled and checked every fuse from the interior fuse panel and the power distribution box under the hood. There were two mini fuses blown under the hood. I replaced those and none of the others were damaged. I checked the the starter relay on the passenger filter. It has power. I get power when I turn the key over, even though no other lights come on and the truck still does not try to crank. Jumping across the two terminal does nothing. The starter was replaced this summer, the alternator was replaced two weeks ago. One battery is about a month old and the other is less than two years old. Both came from Ford and I believe they both have 850 CCA.
I have had problems with this truck before and I have always been able to find the answers on here but I have not found a thread with a problem like this. I know there are some bad MF's on here so if anybody can help me figure this out, ya'll can.