Man I know that's a rough situation to be in when your buddy was just trying to help out.. Don't worry though, correcting the wiring won't be too bad. Here's a full installation guide for the push-to-start ignition switch
that will allow you to check over the wiring. Follow the instructions thoroughly and adjust any wiring that's out of place. There's even pictures to make things easier!
I'm sure you'll get this straightened out!