Rrrrrrr, need help on this one.

I ll post a little video, tomorrow night. Some pictures too.

I thought of that too. But, if it consistently blows 40 amp blade fuses. I would think that it would blow a fusible link too ? I think what i’m going to try to do is. Try to mimic the wiring connections on this 73 Dart to my 69 Coronet. They are nearly identical. I’m hoping this will help me pinpoint a problem. A wire has to be incorrectly grounding or touching somewhere, but I can’t see any issues. I’d rather rip a motor completely apart and put it back together than hunting for **** like this. It has to be related to ignition. No problems with accessories, lighting, etc. until the key is returned to off position. It will crank all day, if I want it to. Blows when I turn key off.
First try not to make wiring into a big thing. it's much much easier than rebuilding a motor and anybody can do the wiring at their own house not have to send things out to an expensive machine shop because we don't have tooling...
Simply follow the wire all the way back from where the fuses blowing to where the next connection is... I'm already suspicious if someone added a fuse to this from what I gather to something that already had a fusible link. Probably melting and burning out the fusible link and making a mess... Try not to throw another Band-Aid on it like the previous owner...