[fred cook]

When I installed an MSD 6A in my SC, I just put male terminals on the wires and plugged them into the factory master plug that came off the Bosch CDI unit. Very easy install this way and will be easy to put back stock later if desired. Other than the six wires in the plug, you will need a power lead (I used the starter as a power source) that is fused, and a ground. I ran the ground to the frame and then to the engine just to be sure that I got a good ground. I turned the rear window relay horizontal and mounted the 6A just above it running front to rear of the car. That way the stock cover will cover most of the MSD unit. I also replaced the 3 fuse panel with a 4 fuse panel to make a fused connection for the main power lead to the MSD. Hope this helps. Good luck with your project!