1965 dodge dart - big turn signals on the side panel.

Ugh. Definitely added on long after the car was built. The '66-body Darts built in Spain had side turn signal repeaters much more thoughtfully designed and integrated into the spear trim at the front of the fender, as shown here.

Turn signal repeaters are a great idea; it's kind of nice if your turn signal can be seen by people located where you're about to move toward. But there's no need to be ugly about it.