73 valiant no spark from coil

That connector doesn't look too bad, other than the melted terminal - an indication of high-resistance from corrosion or a long ago short circuit. Buy some "contact cleaner" and spray it in each female terminal and rub a small file in. Clean the male terminals w/ sandpaper. Blow them out, spread silicone grease and re-attach. You can remove each terminal for better access. For male ones, squeeze longitudinally at the bottom, for females use a thin, flat bar in the release slot (can buy a tool, or a jeweler's screwdriver). Look for "57 terminals" on ebay to see naked ones.