67 Dart Conv. - No Tail Lights, Park Lights, Flashers

Ha! There's some threads you can look for sharing cleaning methods of terminals and the same can apply at the fuse clips too.
These things can be difficult sometimes to figure out.
I had major frustration on my Heep I mean Jeep with terminals that were loose. They look OK, then put the (Ford) connector on the coil or the one to into the (GM) alternator. Randlomly the engine would die and come back to life. Similarly alternator would stop working. In both cases it was terminals not holding in the plastic connector and so they would touch the male terminal but not slide onto it.