1970 Dart starting issues- key will not crank now

Hello,

I am beyond frustrated with my cursed 1970 Dart. This thing has fought me the entire way. The car has 65,000 original miles and started life as a 6 cylinder. When I bought the car the motor was removed and the v8 k member was already installed.

I had a battery draw and found the horn relay was stuck so that was a easy fix. I also replaced the starter relay at this time as well.

It currently has a 408 stroker with Eddy heads and Air gap intake. Holley Sniper delivers the fuel. MSD 6Al box with a MSD distributor. Transmission is A 904.

So when I started the car with this motor a few months ago I did this with a carburetor on it so we could break in the cam. Having never run a Holley Sniper before I wanted to make sure the motor would start for the break in. I noticed as I would crank it to start building oil pressure and to start it, its like the cranking would fade away or something would get hot. I ended up jumping the two lugs out on the starter relay and the car fired right up.

So we broke the motor in. I installed the Holley Sniper unit. Went to start the car for the maiden voyage and the starter cranked with the key at first then faded away to the point where it hasn't turned over with the key since. I wanted to drive this thing bad so I decided well I'll jump it at the starter relay again so I can at least drive it around the block. I go to jump it and the starter itself is fried.

I replaced the starter and jump it at the starter relay and it fired right up. I drove it around and everything was great. Shut it off and nothing with the key but I could jump the starter relay and it does still start.

Prior to the engine install I repainted the engine compartment so I unplugged the bulk head. Could this be burned up? I need to check it tonight.

I did think maybe the Neutral safety switch was giving me fits so I by-passed it and I still could not get the car to crank with the key. I tried starting it in different positions with no luck.

I have not been able to find a fusible link to check and see if it blew?

I did have the steering column out and I replaced the turn signal switch. When I put it all back together at first all my lights worked. Now my brake lights or turn signals don't work.

The crazy thing is this thing would crank and crank with the key many times through out building this car. It's like something burned up?

Any help would be appreciated.

Thanks, Mark