Starting problems. Won't crank

Been taking longer and longer to start, when I tried to start, turned over several times then abruptly stopped like battery went dead. Battery is 1 month old and fully charged. Now all the dash lights lite up but when you turn key to start position the dash lights go out, but the headlights stay brite, but will not crank. Can hear the starter solenoid click, so power is going to starter. Had starter bench tested and is ok. Don't know if they checked solenoid and could be problem. Tried to start in neutral, same result. Move shifter to reverse and reverse lights come on, so don't think neutral safety switch. Ignition switch? Some one said something about crank position switch? Any help would be appreciated.