Good news, i put it in! Bad news, voltage is droppin even lower! It took me almost 3 hours to do it cuz it started gettin dark and it was hard for me to get to. first problem was gettin the old one out. second was the wheel on the new alternator. it was smaller than the original so my belt was lose when i installed it. Then i had tha guy at advanced auto parts switch tha old wheel to tha new one. Ok.. got it hooked up, turned on tha car 14.5v! hooked my amp back up(not turned up, jus connected) turned my lights on and...13.3v...12.7v...11.2v. Disconnected tha amp again and it still dropped.On tha way home i got stopped at a light and it got down to 9.8v! :^ as long as im on tha gas at about 1600rpm and above i get 14.1v-14.5v but as soon as i let off it jus continues to drop! i think it might have somethin to do wit me switchin tha wheels but if its somethin else, please let me know!