Rrrrrrr, need help on this one.

I just bought my car a few weeks ago. Car was running fine. For no reasonable explanation the in-line 40 fuse started blowing. I put a new fuse in. Everything powered back up. I attempt to start the car. It cranks for long as I want, but will not fire. As soon as I attempt to shut ignition key off. The fuse blows. I blew 10 fuses until I discovered a points condenser attached to negative terminal of coil. But, this distributor has been converted to electronic. I ran out of fuses before I removed the condenser thinking it shouldn’t be on there. Regardless, the car wasn’t blowing fuses prior to last couple days. I have same exact set up on a B body car and there is no condensor. So, I removed it. I’m usually pretty good at diagnosing problems. But, I’m going to need help on this one. I have no clue, why the fuse continues to blow now when I only attempt to start the car ?