Truck won't start -Good battery
I have a 1998 F 150 4X4 with a 4.6L V8. It is stock as far as I know, maybe some flowmasters. When I parked last night, everything was fine.
This morning when I left for work, I reached in to crank the truck while I scraped the ice off the windshield. I put the key in and turned the ignition to the "on" position, everything was normal. I turned past that to the "crank" position, and nothing happened. All the lights went off, and the dinger stopped dinging. I turned the key back to the "on" position, and the lights did not come back on, nor did the dinger start. I checked the battery posts for corrosion, but there was none. The wires were plenty tight on the post. The lights will come back on after a minute or two, but only for a few seconds. I can hear a relay clicking under the steering wheel when the key is in the off position. I don't know if it's related or not, but my open door dinger dings when the key is in or out if the door is open, so I guess it's trying to ding, but don't know. Also, I can hear a relay clicking under the hood when the key is in the "on" position. I pulled the cover off and it is relay # 6, but I don't know what it's for. When this relay is clicking, the light for the passenger side airbag will come on and the check engine light will come on, but faintly, like they are getting and losing power rapidly. But again, when I turn the ignition to the crank position, everything stops.
Anybody have an idea?