Ignition Switch Connector Fail

Took the Dart out for a spin today after setting timing, all going well, turn the corner and car shuts off, lost all power. Pull over, reached under dash jostled the ignition switch connector and I was back in business, got home and took a closer look, the large red wire of the ignition switch connector was loose and not seated in the connector properly, connector was burning hot. What is the best way to fix this? Replace switch- connector? Or simply place new terminals on each end of red and reconnect? Thanks!!
Hello, this is an older post but I hope you can help me. my ignition switch connector melted. I've searched the internet for hours but couldn't find a replacement. Can you tell me where I can get a plug like this or even a better one that doesn't melt again?

greetings from Germany