I have an 03 aviator and sometimes when i go to start it all of the lights and radio comes on but when i turn the key to start it nothing happens, after a few hours i try again and it starts right up.
Check the ignition components and battery cables/grounds. Corrosion on the battery terminals?
Thats all been checked , along with all fuses. While it wont start there is a clickung sound coming from the light for the alarm, could the alarm be causing the truck not to start?