Now just plug the harness on the battery back into the harness coming from the EL wire and turn on your driver or sequencer.
The El wire should light up and you should be good to go for many hours of El wire fun!
Post pictures of your projects that you make with EL wire in the comments. If you need supplies you might want to check out the awesome folks at Cool Neon
which is located just 10 minutes from Instructables HQ in Oakland, CA.