LED signal lights on a 74 Dart

Just have to ask...

You are aware there are 2 flasher units, one for flashers and one for turn signal. I would expect you would need to replace both with LED flasher units.
Yeah I thought I made that clear, the hazard flasher mounted to the fuse box is original stock and works fine. The signal flasher mounted by the ash tray is the one I'm fiddling with. I've tried 3 different LED flashers and 2 different incandescent flashers. LED flashers don't come on at all the incandescent flashers come on solid but don't flash.