flickering lights 66 dart

I made time to work on this over the break.
I replaced the light switch with one from Kragen ($18 if I remember)
When I took out the old one I could see where the connector had heated up and melted some. I got it hooked back up and the headlights are working, and so is my fuel guage. But I am not sure if the dash lights work (have not driven it at night yet)

Where can I get a new connector for the light switch?