My F150 would not start a few days ago, after only having turned it off a few minutes prior. The gauges would sweep wildly and get stuck at various positions. I checked the fuses and they were fine, then unplugged the battery for a bit and it started back up. Occasionally it won't start and i'll have to disconnect the battery again to get it to start.

I'm still having some strange electrical issues though. The radio no longer turns on unless the ignition is turned to AUX. My back up alarm for going in reverse doesn't come on anymore. The gauges take at least 10 seconds to wake up after starting the truck. The dashboard blinker indicators will randomly stop blinking or making any noise.

I was thinking it could be the computer, but could it be something else?

 

Pull negative wire off of battery, right beside the battery there are 3 big connectors into the PCM, unplug clean the contacts with like a qtip and alcohol and reinsert. Make sure they are seated good. Then try again