We're not on the same page I think. What exactly clicked? was it the starter?
If yes, have someone turn the key to start, while you smack the starter with a hammer.No, don't try to smash it like a pumpkin! Just some energetic smacks.
If that gets her going, I would suspect a faulty ground. I would pull the starter off and clean the contact points where ever the starter contacts the bellhouse. It needs multiple clean contact points. But if no change, I would clean all the power contact points. Start with the battery posts. Then the connection of the ground cable to the block, then of the power connections at the relay, and finally the starter.You can retest after each connection is cleaned, and quit when it cranks.
You said you tried a second starter with the same results, so I doubt the internal solenoid is having trouble contacting, although it is somewhat common.The big copper washer gets corroded and or beat up pretty bad. I have had to take the starter apart to to fix those.
But if the relay was clicking, new story. When jumpering the two large studs, with the key off, that relay should be electrically dead, so it could not be clicking. The second large stud has the small HHscrew, with the second largest gauge wire on it; I think it's brown.
