one wire-
Hotwiring is easy- but you need to use the key to unlock the wheel and send power to everything.
To hot wire- there is a purple wire running into the column harness- hit that with 12 volts and it will start up. If you have to break the key cylinder- make sure that the rod running down the inside of the column to the ignition switch at the bottom of the column is engaged. Let me know if you need anything else--- good luck
By the way, I am assuming this is an older style chevy