Most likely you have a failed starter if the clicking is loud and originates from the right passenger wheelwell (where starter is mounted) First, you have to be sure both battery cables are good and tight, these things like to get loose cables that cause this. Often if you tap the starter with a hammer while someone is cranking this will start it up. This further indicates the starter has failed. If you tap on it more than twice and it doesn't even turn slightly than stop, and you'll have to verify good power signal to the small gauge wire in the starter solinoid. Use a test lamp and disconnect this lead and have someone crank while probing it with the test lamp. If the lamp lights the starter is faulty. Purchase a quality starter, i've had issues with aftermarket non A/C Delco starters.

-Rip