I know older post but I just did it to another one of my buggys......All i did is unhook the Black/red wire and tape it up and then Either have the 12v+ wired to be hot with the key or have the ground switched by the key. For instance on my hammerhead the cdi 12v+ is wired to the key and on one of my old crossfire 150s the ground was switched on/off with the key. Here are the pinouts for AC and DC cdi's
