Cadillac Repair: 83 CADILLAC DEVILLE WONT CRANK, purple wire, cadillac deville

Question
YESTERDAY I GOT OUT OF MY CAR, CAME BACK AND IT JUST CLICKED AND A JUMP DIDN'T HELP.  NEXT DAY TOOK STARTER OFF AND HAD A CRACKED SOLENOID. REPLACED W/NEW STERTER AND ALL STILL NOTHING BUT A CLICK FROM REAR "AREA" OF ALT.  THOUGHT POSS. VOLTAGE REG. SO REPLACED ALT.  SAME THING.  I HEAR A ONE TIME CLICK NEAR THE ALT, BUT NOTHING FROM THE STARTER WHEN I TURN THE KEY OVER. THE PARTS ARE NEW AND TESTED AND BATTERY IS 1000 CA AND CHARGED AND I'VE NEVER HAD A PROB OR SOUND OUT OF MY 4100 ENGINE........HELP PLEASE!!

Answer
As you try and start the vehicle, Check for battery voltage at the single purple wire at the starter you should have battery voltage at this purple wire when you have the key in the START position. If you DO have battery voltage per above, have the starter tested. Just because it's new does not guarantee it works.