MSD issue

Ok after talking with several people last few months. I changed the ignition switch. No start now. While I was having this problem before with no power in the run. I was always able to run a jumper from the solenoid to my MSD connection and it would start. Now I have no fire at all. I know ive got fuel. I know the box is getting a signal as I see the red light come on when i flip the key to on position.