My 2005 rangers lights have stopped working, all except the headlights. No break, hazards, reverse or dash. This happened a few days ago. Then today I heard a clicking coming from the cab fuse box. Then the truck wouldn't start! Does anyone know what is going on?

 

Welcome to FTE.
You may have more than one problem.
Did the light problem come about suddenly after some event?
Check your battery state of charge & post the open circuit voltage Number. If the state of charge is low & you have battery caps, remove them & check that the plates are covered with electrolyte, if not top up with Distilled water & replace the caps.
Then Check the under hood power distribution box for blown fuses
Then check the B+ & B- battery cable connections on Both ends, to make sure their clean bright & tight.
Then connect your smart charger & set it for the type battery you have & set it to a Low rate of charge, say 4-6 amps, so to let it Slowly recharges the battery.
Once the battery charge is right, try starting the engine. If it'll start & run, then use your multimeter to check the alternator output voltage as you'd want to know why the battery soc was down?
Once the battery & alternator are known to be ok, use, borrow, or come by a ELM scan tool as discussed here https://www.ford-trucks.com/forums/1...-scantool.html & running FORScan diagnostic software on the viewing device of your choice, have it scan the computer for trouble code clues & post All code Numbers, as they can help focus a trouble shoot
Some beginning thoughts for consideration, let us know what you find.