Is a 1973 Duster relitviley the same as a 1971 Plymouth Valiant?

I am working on a 1971 Valiant/Dart and I need parts here and there. A full wiring harness, wiper set up, ect. I am concerned about the wiring harneses. Are the pig tails the same? Will it snap right in and be good to go? Need help please!