Ignition Switch Connector Fail

Thanks everyone for your help, guess I have some digging to do! *and a fire extinguisher to buy* Time to do the alternator bypass too..
The only aftermarket item is a stereo previous owner installed. He had spade connectors slid on the fuse clips to power it..while looking at the ignition switch wiring they came off so I am gonna leave it disconnected till it can be done better.
I pushed the pin into female side and is tight however the pin does not hold at all in the burnt connector obviously. If all the wiring checks out good should I just replace the entire ignition switch or seperate the thick red wire to a seperate connector--I noticed that on the replacement switches (standard brand) has the thick red and black wires seperate from the white connector.