I installed the battery, and double checked one of the battery connectors before closing it up. Once I got it all together, I plugged it in and it showed the REALLY low red battery with the lightning logo. So I waited, and read a couple comments, and people were turning on their iPods right away, but mine wouldn't give me anything but the REALLY low battery. I started to get worried, and looked up a couple other answers. After about 5 minutes, the silver Apple logo popped up and I was relieved.
Just remember to have a little patience.