Starter won't crank, just clicks when I turn the key

[CarPsyco84]

When it just clicks, the lights on the dash and everything stays light correct? if not, its the battery posts. When you say it clicks, whats clicking, a relay, or the solenoid on the starter? If the solenoid is clicking the wires to it are most likely ok, and it would be a dead spot in the starter motor.

[bertrenolds5]

The clicking is comming from the starter solenoid, when ever I turn the key it will click once. And the lights on my dashboard stay on when I turn the key to crank the car. I'm getting -.115v dc when I put the volt meter between the little black connector and the negative post on the starter and turn the key to start and have it click at the starter solenoid once. And -.094v between the negative on the little black connector and the starter bolt negative when I crank. And from the little black clip to the negative post I'm getting -.109v when trying to crank the car. I get 12.6v from the positive on the starter to the negative battery post and about the same from the negative on the starter to the positive post. When I crank the car and hear the click the voltage drops from 12.7v down to 12.15v which should still be enough to start the car.
I brought the starter to orilleys and had it tested but maybe they were wrong when it passed? I have hit the starter but not while attempting to crank. It would be really annoying that I spent all this time and it was still a bad starter. I guess I could test the relay, can I run 2 lines off the battery to the relay and then test for continuity on the other posts on the relay? It says how to check it in my chilton's but it's not specific.