Ah, I see. Is this because there's not enough amperage? I checked out a video on YouTube and he showed several different ways to to connect a motor to the arduino. I purchased everything for all three ways (don't you love how inexpensive everything is?) and I'll try them all and see which way I like the best.
Here's a schematic of what I was trying to do...
I'll draw up what I'm about to do and see if it's good enough to do.
My problem is, do I always need to run the arduino and the motor from two different battery sources?