1996 Dodge Neon Question: 1996 neon, changed starter and only clicks

i have removed the "new" starter and placed it on the bench, connected the jumper cables just as you have suggested, and the starter works fine, and that is with the battery from the vehicle itself. the starter just won't work in the car. i thought i might have overtorqued the mounting bolts, and loosened them a bit, but the starter continues to belch a single click when ever i turn the key, or push the button on the remote starter switch. i am baffled. it was running for about 2 hours just after i initially installed it, now it won't restart at all.

thank you all for your contributions; autotechpat, thanks for leading me in the right direction. yes, i reinstalled the starter using only jumper cables to check it, isolating the system now from the original wiring, and the starter worked fine. found out that the bolt at the battery terminal connection was corroded, causing a voltage drop to the starter cable, which is attached to the battery terminal bolt itself. wire brushed it and cleaned it all up, reassembled everything and it starts fine now. again, thanks for all of the input, and i hope this may help someone else out there.