2005 Ford ranger -two wheel drive-4 cyl........wont start. no sound from ignition key....clicking sound in relay.......no lights. battery has full charge

bad ignition switch

Ford Ranger Questions - 4 wheel drive relay clicking under ...

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CarGurusJun 5, 2013 - 4 wheel drive relay clicking under dash - i put my truch in 4x4 the other day and ... and watch it move (or not move) while selecting 4x4 high, low and so forth.... MY 1999 Ford Ranger 4x4 will not go in 4 wheel drive 5 answers.

Check the batter voltage first. If not that check fuse panel under hood for a 100 amp fuse check to see if the fuse is bad or if it has power. Also check fuseable link wire at starter to see if wire is still good. If it is bad, internal short possible on starter, take out and test it. Replace fusible link.

Maybe the ignition is bad- or your starter solenoid stuck in engaged position?

If automatic transmission wont work engine block's are not the same, if stander transmission you could swap out bell housing held on with four bolt's from one to the other. Good luck and hope this was very helpful.

You will need a new lock cyl. which is best purchased from ford, the tumblers are the culpret in your situation, you shouldn't need to remove the steering wheel the cyl can be removed after taking the trim bessels off, also if yours has the big black plastic key you have a transponder antitheft system so it is best to us ford cyl and code it to your original key so no need to reprogram keys, IE aftermarket cyl w. new keys.
The cyl should be about 100+ depending where you live.

check the body ground and fuesable link!!!

no this is either caused by a defective starter solenoid (on starter) or a defective positive battery (red) cable, both are common on this year of explorer.

You pretty much answered yourself here, the switch sounds like it is going bad.