does it still crank over? im wondering if you have a few problems..... ive had an ignitor die on me while driving... all was fine then nothing..... some say the ignitors give warning, mine didnt.....
you might wnat to check into the ground cables and power cables for the starter...
if you replaced it with an aftermarket starter you just wasted a bunch of money.... 50% of them work, they bench test fine, but fail in a vehicle....
i would return it, say it doesnt work, get back your original oem starter and rebuild it... there are quite a few places that outline rebuilding of the starter... the oem starters rock
http://www.4crawler.com/4x4/CheapTricks/Starter.shtml